Help! DS2 has been a great sleeper since he was born, basically put him in his cot awake and he would happily drift off to sleep on his own. Day and night, we had a period from about 4/5 weeks where he wouldn't sleep in the arvo bit by 8 weeks he got a lot better.
He was 10 weeks on Monday and he's been really difficult to get to sleep and stay asleep now
What's going on?