Acid reflux in my 6 week son

Stevie

I have 6 week girl/boy twins and I exclusively breastfeed them. Since day one my son spits up everything he eats and I have cut out all dairy and caffeine hoping that could be the issue but he’s still happening. I mentioned it to his dr but he just told me he will grow out of it. I will be bringing it up at their 2 month check up. So I’m just wondering if anyone has dealt with this??