My implants are bottoming out. What kind of revision surgery should I be getting? (Photos)

I’m a 20 yo female 97 lbs 5’1. I had a breast augmentation almost exactly a year ago. I love my surgeon I thought she did a great job. I wanted a very natural modest small breast augmentation. We went with 200 cc silicone smooth round implants under the muscle. The first doctor I saw warned me to size up to 225 to prevent bottoming out due to the implant not taking up enough room in the chest pocket and sliding out, and me having loose breast tissue, and my nipples already sitting high. I noticed the bottoming out somewhere from 4-6 months post op. I love my boobs even now. I don’t want them to look fake or overly perky, which I’m scared will happen if I get a revision. I also don’t want to size down, or anything above 225. I’m not sure what to do. I know there are different methods like ADM, internal bra, and capsulorrhaphy, or could I do a simple repositioning. I also don’t feel the need to replace the implants at all, if anything I’d like to keep them with a revision. Is that a possibility? I don’t want to lose the natural look and soft plumpness that she achieved barring the obvious bottoming out. The lack of cleavage is not a concern, my chest is just wide for my frame so I prefer it. My only concern is the asymmetry and downward sink. If I don’t fix it will it get worse? What revision method would you recommend?