My LO is getting better at sleeping through the night, but sometimes that means he wakes up at 4 am. Is there any way to encourage him to go back to sleep, or do I just need to accept this early waking (which is what I have been doing)? My DH put some toys in his crib the last time this happened and he played a little by himself until I came to get him around 5 am. Is this normal? Any advice or experience with this sort of thing? I'm not even sure toys are allowed in the crib at this point; I always thought we were not supposed to put anything in there.