I know it's a minefield isn't it? You did absolutely the right thing. It's really hard to know if it's OT, but I would be thinking so considering that's such a big jump for him the last few days.
Yep, maybe try 5.5hrs tomorrow and see how it goes? As I said before it'll take a bit of trial and error to find where the nap needs to be. Some like a longer first A and shorter last A like mine, others the other way round. It's a case of trying to see what fits.
7pm BT sounds good, you can only try and see. Did you take a look at that link I posted? If 7pm is your ideal BT it might be an idea to stick with that and see what happens. As the link says, you can do BT up to 30mims earlier if the nap is short.
Ideally you'd want to try to keep to a 12-hr day early on, but that's not always feasible with such an early wu. And if the nap is good at around 2hrs you can afford to push the bedtime, so let's say 13hrs at an absolute max, but 12.5hrs ideally? Wdyt?
if you went with the set nap idea, we could set nap for 5.5hrs after wu which on average is 6am atm isn't it? So the set nap time of day will be 11.30am for hopefully 2hrs, then BT at 6.30pm for a while until we can push things back? Then if we hold that for a week at least then we can move the day like we do with daylight savings? X