for the past 2 days B has been having a horrible time going to sleep for his nap. he woke 2 days in a row at night, then that stopped and 2 days later he started to not go to sleep when we put him down for his nap. he finally fell asleep at 3:20 yesterday and we had to wake himabotu an hour later to save bed time. today has been the same ting, it is 2:40 and he is awake standing by his gate. he has been in his room for a hour now. is this a sign that something needs to be changed? last night he slept from 8:00ish -7:30. advice?