I want to go larger and more symmetrical after previous surgery 8 yrs ago - what procedure would you recommend? (Photos)

I had over the muscle implants in 2017 to correct my significant asymmetrical breasts (also slightly tubular) and to increase size I have 420cc in my right breast and 560cc in my left breast, this was the biggest my surgeon could take me at the time due to having quite small natural breast despite my curvy frame, I’m 5ft 7 and uk 14/16 in size I’ve since had two more children and one has dropped more than the other what procedures would you advise to get them larger and fuller at the sides and symmetrical