Baby movements not consistent

Tia

Hey guys ! So I'm currently 17+2 with baby number 3. I started to feel very very light movement at 16 weeks for a few days but then nothing after that. Is it normal for it to not be consistent yet or is this not normal ? I know in my last 2 pregnancies I didnt get movements til like 20ish weeks but I'm just nervous since this is my third and I guess I assumed to feel consistent movement by this point.