8 month old - have to wake up

[E899]

Hi all

My 8 month old has never particular enjoyed naps and woke several times a night. Now for these couple of weeks he has started napping for longer which is great (2 naps a day) but I have to wake him up to make sure he stays on schedule. Same for nighttime, he used to wake up at 7am whereas now it can go on until 8am and by then I wake him up.

Is there a reason for this? And should I be just letting him sleep?