I’ve been looking into this too, from what i’ve heard as long as you leave it 12months after your ba for your boobs to settle then they should be fine, they’ll get bigger when pregnant, just like normal and go back down after, i think as long as you keep them well supported it will be fine.
I have a 2yr old and had my ba in nov, think i’ll be waiting for the 12months as i wouldn’t want to ruin them xxxxx