Increased milk supply and sleep

Well my milk has definitely come in! I woke up this morning with extremely engorged boobs and my tank top was soaked lol

I noticed today my daughter has been sleeping much longer than she has been and doesn't nurse as long on each boob and sometimes only eats on one side and won't wake up to eat on the other.

Is this coincidence or related to my increased milk supply?

Probably because of the milk