Is Cluster feeding Week 1 Normal?

Hey yall, new father here to 6 day old girl, she's been cluster feeding or grazing since day 3 and only at night. Now it's not the cluster feeding is a issue I'm off on parental leave with my wife and since day 4 we decided to do shifts for first bit so she can get full 6-8 hrs to recover ( I work rapid rotation shift work so was easier for me then most to do nights and due to that I normally get 3-5 hr sleep and go work 12 so I'm used to being tired). So again no issue is what it is.

But is it cus of any issue I'm causing? I know cluster feeding is normal to happen, but everywhere I looked seemed to be grow spurts and happen few weeks in.

Just want to make sure it's not something like I'm not burping her enough and it's causing her to eat less. She does eat more during the day and sleep longer during the day. She's also formula fed and most things I've seen were talking about breastfed newborns.

I love my daughter i just want to make sure I'm doing things right.