My baby is 5 and a bit months old now and he seems to be getting tired after about 1.5 hours of being awake and if I keep him up for more than 2 hours he turns into an overtired little wreck. I need to put him down after being awake for 1.5 hours and he can get himself off to sleep in about 20 minutes....
Is this normal? I thought he should be staying awake more than this by now?