Hi there Sweetie,
(HUGS) at this tricky time. Okay TBH reading through this and taking into account all of the factors my advise for you having BTDT with DS is to take a breathe and ride it out. Holiday, ear infection, teething, it is no wonder he is 'at 6's and 7's right now' I know these times are so very tiring for LO and us as parents, but maybe you feel the same way I always used to. I would be in a state of panic about APOP and routine being all over the place, but I can tell you this with certainty. Once a LO has been an IS, they can go back to being an IS, so IMHO you do what you need to do for him at this time, in order to help him through. Sometimes I would forget what is at the heart of BW, which is to be in tune with what your LO needs, because I was so scared that I was doing Sam damage by allowing his routine to be AWOL, but I have been there so many times now, that I know it can always be put right. Oh my goodness I hope that didn't sound like a lecture
Also, as he has just turned 2, I'm sorry to say but regression may also be at play with the 2 year leap
we have sleep disruption around every birthday.
Having said all of that, I would be there for him but limit the APOP as much as possible. IIWM I wouldn't change his routine on a permanent basis as there is nothing to indicate that it's needs changing, there's too much going on to know, but I would try for EBT, figuring out much/little sleep he has had in the last 24 hours, and going from there, on a 10 hour day previously, I would go with a 12 hour day max. If he doesn't tack on, you may be in for a very early morning, but it still could pay off a couple of nights later
The NW are probably a combination of OT and teething. If he is having meds before bed at around 7, then he has between 5 and 6 hours of pain relief, so waking at 11 ish does indicate that it could be down to pain, because that's 5 hours later. For the NW I would, try and get more meds into him. Stop the milk, but allow him water, or even juice if necessary (if he doesn't like water) but handing him the cup to drink himself. I wouldn't worry too much about needing to stay with him to help him back to sleep at the NW, but I would keep him in his cot/bed if you can with a gentle hand on him/back rub, whatever he needs, so he knows you are there. If he is standing up I would just use a sleepy phrase, and lay him back down gently shushing.
As WI/WO has been successful for a few nights, I would probably still try for it, but then stay if he is upset.
I recently bought Sam something called a 'dream lite' it's one of those cuddle buddy soft toys, which is a night light, it shines the shape of the animal and stars on the ceiling, it's fabulous
I'm mentioning it because he has been NW and I switch it on again (20 min timer) he watches it and he falls back to sleep quicker than ever before, it's so relaxing. Maybe this is something DS would love at this time, throw something nice into the mix for him whilst he's struggling
http://www.thetoyshop.com/Dolls-and-soft-toys/Soft-toys/Pillow-Pets-Dream-Lites---Jolly-Giraffe/p/514909_giraff?pageType=PRODUCTThis is Sam's giraffe ^
I hope some of this info helps Hun.
x.