Diaper sizes

Hallie • Had an ectopic in November 2015. Baby boy born March 14 2017 & Baby girl born March 19 2020.

What size is your babies in?

My son is going to be 5 months on the 14th.

He is in size 4's, we use LUVS and I see they only go to size 6. I know he stays in each size for a while, but I'm panicking thinking of what he will need by he time he's 1. I seen Pampers go to size 7. So my question is if he did outgrow diapers what would I use? Pull ups? I know boys are usually harder to potty train.