My baby is 9 months 3 weeks. He's always been a really good baby and has had a good sleep routine for around 3 months now. The last two or 3 nights he has not wanted to go to sleep at his normal time of 8.30ish but has been crying for hours, even though he's tired, until 11.30 ish, it's driving me crazy as I'm tired too. He has been teething a little and got two new teeth. Apart from that he's happy and well. He's also grumpy during the day, probably because he's not getting enough sleep at night.
Hmmm not sure about growth spurt but could be teething. Is he hungry at all? Does he sleep well during the day? have you tried to give him anything for the pain of teething? Not got any answers really but didn't want your thread to go unanswered.