Thanks Caro, but we've worked out what room temperature suits Jacob best (there is a temperature gauge in his room) and it's much warmer than what both DH and I would prefer to sleep in ourselves, but that's what Jacob likes, so I think we can rule that one out for now, but it has definitely been something that cropped up in the past as disturbing him (as it would if you were cold!). Sleeping bags are something we have tried previously too.

I can honestly say we have tried every strategy we can think of and that includes putting him to bed at 7 - 7.30 but if he fights the sleep that whole time then there's not much I can do about it IYKWIM?