teapig, the heat REALLY messed up DS sleeping, partly because his nursery was marginally cooler so we had together him to sleep in there rather than in our room. He seems to have settled back down a bit now.
We also had a BBQ with loads of people round, and me and DP may have got a bit, ahem, tipsy. Any routine went out of the window that evening and contributed to the hell up I reckon. ALSO, I think he had a mini growth spurt, coz a couple of times when he finished the bottle with his dad he WOULD NOT be consoled by anything other than the boob. But who knows? It's all a guessing game in this house!
Anyway, rather than waffling on I was hoping to reassure you that for us it seems to have been a phase, and hasn't upset his essential sleeping habits- still a fricking nightmare to get to sleep at bedtime 😊