Does milk supply change with every baby?

Marina • 💘Wife👰🏻Pregnant with baby #2🥰

I am currently pregnant and my son is just going to turn four months old, I had a really low milk supply with him and had no luck with breast-feeding. I still leak pretty often now but I was wondering if I will also have a little milk supply with this baby? I really want to breast-feed as I wanted to with my son but I’m worried my supply will be just as low with the new baby