HMmmmmmmm......the main thing that I think puts a spanner in the works for her is that she is not at home with him FT....routine wise and sleep wise that will make it harder. BUT does her nursery or daycare have a routine that they follow for the other LOs that age, where she can at least try to "enforce" something on him as far as naps go? At this age the idea of "set nap times" really started working well for me.
Anyway, to go to the start, I worked very hard on breaking our co-sleeping using GW. To be honest, DH and I weren't 100% sure we wanted to co-sleep because we were afraid of the future (ie a 4 year old in our bed) but we were adamant that a 6 month old belonged in our bed. When he got mobile we started panicking - I couldn't realistically go to bed at 6pm every night and STAY there, but we couldn't leave DS alone upstairs in our bed (even if we had rails). So, we had to get to work on it when DS was 7.5 months old. It took about a month, total. Not sure if it would be longer or shorter with a 10/11 month old baby?
I rocked DS to sleep as well, and then put him on our bed, and then slept with him, so that had to go. i started rocking him a bit less - putting him down 30 seconds earlier every 3 days. When I put him down, he would wake, so I started rocking him on my knee instead of in my arms. Then transfer him onto the bed and stayed on my knees and gently bounced up and down with my arms around him until he was sound asleep - a back cruncher for sure. Few days later, I just started putting him down on his back, me cuddling around him while on my knees and sort of bouncing him to sleep. Once that started working, I started snuggling up beside him but using my hand to bounce the mattress. We got stuck on that one for days and days I think, but then I just started putting my hand on his chest and gently rocking him side to side. I know that all of this is harder with a 10 month old who probably rolls around and what not, but I think the key is for HER to think about little ways she can cut it down to something a wee bit less every few days. As soon as he was used to the new way, I let him keep that for 2 days and then cut it a bit less. I didn't always have the next 2 or 3 steps in mind, I would lie there trying to decide, but knowing how he goes to sleep and what he needs will help - as long as she can see one step ahead then she can keep going gradually.
Once we got there, I had to break the co sleeping.
I started by putting DS's cot mattress (the one he'd hardly ever used LOL) on the floor in our bedroom. Against a wall, and pillows on the floor next to it. We had an Angelcare movement monitor so that was under, which was critical for us at this stage, and a sleep positiioner. Thinking to what my LO was like at 10 months I know the sleep positioner would be useless but she may have to think of her LO and come up with "something." I started putting him to sleep in the same way he now went to sleep on our bed. But, I lied beside him on the pillows I had piled up on the floor. I made it comfy enough that I could stay there an hour if I had to, but not so much that I could do it for much longer. Once he was asleep, I left. The movement monitor helped as he had no rails and that way if he did roll onto the floor, we heard the alarm. Over time I just needed a little hand on his tummy and gently swaying him.
When he woke in the night, instead of bringing him to me, I went to him. Lied down on the pillows on the floor next to him and stayed until he was asleep. When he was asleep, I went back to my bed. I took 3 or 4 days and he was sleeping through - realised he and I were keeping each other awake with the co sleeping
The key thing was that I went to him, didn't bring him to me, and that when he was asleep, I left.
After this had been working for a week or so, I moved his mattress to his own room. Feared the worst, but it continued on as it had been - he rarely woke, and if he did, me lying next to him for a few minutes put him back to sleep. After a few nights, I put his cot up, in the same spot the mattress was, and just sat next to him if he woke. I think we went back and forth on this a couple of times, as I do have a recollection of one night at 3am hauling his mattress out of the cot and dragging the cot out to the spare room, and another night doing the opposite....so perhaps I went too soon, but in the larger scheme of things it was such an improvement that I didn't CARE that I had to do that once or twice at 3am! His naps started getting better as well...he suddenly started sleeping 1hour, 1.5 hours......was a dream. We haven't looked back from then.
All in all a very gentle and painless process. As I said, the exact things that I did may not be appropriate for a 10 month old baby but if your friend can come up with some sort of a "plan" that she can work with knowing her child and her set-up, then it can be an easy thing to break. For us, PUPD was not right. My LO is very sensitive, emotional....and so am I. The crying involved with PUPD is just not something I was prepared to put us both through when it was MY problem in the first place that started it, it wasn't HIS fault that I decided things had to change. And so I felt the process had to be as gentle and gradual and easy for him as possible.
On to the naps thing... as I said, set nap times worked well for us, and if her LO is in day care it may be a good thing for her to start with as far as getting him on a routine. What ever time the nursery puts him down for a nap, then she can start that at home as well. In fact, around 7/8 months a very structured day worked well for us - ie/ after morning nap DS rolled around on the floor with his packet of baby wipes for 30 minutes while I had BW time. Then snack. Then toys. Then lunch. Then jolly jumper, another nap, then exersaucer, etc etc. I kept pretty rigid to the "routine" for a long time, until he started knowing what was coming next. Helped us BOTH out a lot. I tried to get him into his cot for naps at the same time every day, give or take 10-15 minutes. I learned too that he had some pretty set biorhythms and the idea of A time wasn't really as important to him. Now, at 13 months, he still takes his first nap at 930 - only 2.5 hours after he woke. His body just knows that is when he is going back to sleep...and over time I have had to cut the length of that nap, but not really change the time too too much.
If she can get a good pattern set, same things, same time(ish) every day, then it can really help LO set his day to day expectations and body clock. Keeping it relatively in line with day care will help as well.
HTH?
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