Making sure I cover all bases for revision

I had a full breast lift with implants (650 hp) under the muscle with mesh. I was replacing 450 moderate implants from 2015. I am still maintaining 170 lb weight loss so I had snoopy boob but didn’t really care at time. Left boob didn’t drop and clearly high/tight and flat on side, right side has dropped but now slightly loose/saggy since tissue is relaxed. My surgeon is fixing them both and I’m curious what would be standard procedure for each to get the best result Thank you