Hana, I don't follow a strict EASY & it can work, the key is to try & get longer naps at least some of the time, for me it is usually only the middle of the day most days but that seems to be enough to guarantee good night sleeps
Your feed times are what I aim for & let me tell you with a toddler, they don't always work out that way, so I know some flexability is fine there too.
Firstly feeds you want to aim for 7.30, 11.30, 3.30 & 7pm... so with in that range I think +/- a half hour is acceptable as long as you don't really go less than 3.5 & more than 4.5 hours between 2 feeds ie if you feed at 7, you could still do 11.30, or 11 & then try to catch it up later. Also with the 7pm feed. I actually do a 6.45 feed before Liam's bath & a 7.30pm one after the bath... some might say it is 2, others 1... but it works for us. So say you need to feed at 3pm, I don't see why you can't offer at 6ish & then 'top up' at 7ish, if it works for you.
OK so the idea here is in a perfect world, you would want (I'm basing this on a 4mo... although adjusted is a bit younger, he is a bit younger, but 4mo he will be soon & lets work towards not having to make another change.
7ish wakeup
E - 7.30
A - (wind down from 8.30)
S - 9-11 *
E - 11.30
A - (wind down from 12.30)
S - 1-3*
E - 3.30
A - wind down from 4.30
S - 5-5.30
E - 7pm
S 7.30pm
Ok lets start with wakeups before 7am (5 - 6.30)... offer a small feed just to tide over until 7.30am & expect to feed a bit less at 7.30. between 6.30 & 7, try to distract from a feed, by trying to resettle. Any wakeups before 7am, try to resettle after the feed.
OK the 2 bigh naps 9-11 & 1-3.
I know the books say start as you mean to go, but I know sometimes that it just too much.
So I say pick one nap to focus on & work around trying to be home to work on it.
The other one... well start as if you want to get it extended... but after trying for say 15mins, maybe put your lo in the pram, cover it to block out the world & head off on a walk... thats what I do with ourt morning nap, when we don't have other activities. so you are still getting the "down time" for your lo - the key is 2 hours doesn't always have to be sleep, but it needs to be very low stimulation.
Now with extending the 30 min naps... 9-11 & 1-3 are "quiet" times... so I suggest, you put him down for his nap & then when he wakes up, try to get him back to sleep for about 20-30mins, then when you don't succeed, get him up, but don't engage in any stimulation, just try to sit cuddling him in a quiet dim place for 20mins & start all over again... don't think of those times as "having to be sleep" but as times you need your lo to "rest" from stimulation
OK so your lo wants to start the day at 6.00am & so is ready for a nap, long before it's due, so it is going to mess up the day... try just letting him sleep 10mins just before the 7.30am feed, just to tie him over.
A few things to remember, this is all a bit "ideal" & it won't work exactly,
but if "your day" starts at 7, then all wakeups before 7am are treated as night wakeups.
Any time in the 2 hours of "sleep time" is non stimulation, in the cot in the room or in the pram coverd up
You don't need to do it by the clock, but you use it as a guide to keep things on track
I don't know how you feel about walking, but if I lived in London, I would be out taking long walks for my lo's nap time (I lived in London for 6months in 1993) & that is ok as long as it isn't every nap every day!
HTH it is long & waffaly, but I had to do it stop start around the demands of a toddler, who only had a short nap in the car today, so I didn't really get 'me' time!!