Newborn diapers

Ma

At my 37 week growth scan my son was measuring right around 7lbs. I know the growth scans are usually not accurate, but both my husband and I are almost 6ft and we were both over 8lbs at birth (I was almost 9lbs and my husband was a 8.4), so our son will most likely be around 8lbs or more at birth as well.

My question is, how many newborn diapers should I buy? I have a 32 pack that I got from Amazon, and I don't plan on opening it until I need it since its returnable up to 60 days after my due date. Do you think I'll need more than 32? For mamas with bigger babies, how long did your baby fit into newborn diapers?