Witching Hours?

Me

Ugh. I’m tired. For the past 2 weeks, my babygirl is up from 1am-4/5am - fussy no matter what I do. So I’ve literally just learned to ride it out until the morning hours .... however I have a toddler who’s awake around 8am - so there goes my sleep.

My question is, is this considered witching hours? Anyone experience it before? Anyway to stop it?