Do you exclusively breastfeed?

Pr

My son is 2 months & I have not pumped at all. I have a Hakkaa but I’ve only used it once. I only have 1 4oz bag in the freezer. Lol when my son was 3 weeks we supplemented with formula for about a week but I’m now exclusively breastfeeding & don’t know if I should start trying to pump or if it’s too late..