Supply dipping??

My baby is 9 months old and today I have noticed I pumped a lot less than I usually do.. I EBF when I’m with my baby and pump every 3-3.5 hours when I am at work.

I am somewhat concerned because for two weeks my baby has been sleeping in his own room in his crib at night, and all night.. doesn’t wake up at all.

So I pump at 10pm and then on my way to work around 730 am... then every 3 hours after that while at work. Is the night time going to make my supply diminish??? is 10pm-730am too long to go without pumping or nursing?? 😩😩