I am 12 weeks post-op with confirmed waterfall deformity, can I have larger implant to avoid full uplift?

I had ba surgery in august. I noticed some slight emptiness once swelling had gone down, i wemt back to see my sergon and he confirmed i have slight waterfall deformity. I have 425 round subglandular memtor implamts at present. He said id need fulluplift or larger implant. As deformity only behind the nipple and slightly under breast would a larger implant be enough to correct the deformity? I really dont want the scaring of a full uplift Many thanks