worried about boob sag

I’m starting mounajro next week! I’m super excited as I have been overweight my entire life and finally want to be in a body that I’m happy and feel attractive in.

I have bigger boobs (38DD) and I’m worried about boobs becoming saggy. I don’t really mind if they shrink as I know this will just be proportional but I’m scared to have them hanging as they are quite perky right now.

I’m turning 22 this month so I’m hoping my age will help keep them perky but I do have a significant amount of weight I want to lose.

Any tips/advice or experience?