I would talk with your surgeon about starting medications to prevent worsening. I would also start to discuss possible capsulectomy and revision again. Please visit with a board-certified plastic surgeon. Good luck!
It sounds like you've spoken with two surgeons who like to impose their opinions on patients rather than listen to what the patient wants. You haven't said what you're actually looking for here (stay the same size, go a bit bigger like the 400 or go WAY bigger like the 600). In my experience...
The 360cc moderate profile implant will better suit your needs. I would also recommend that implant especially if combining with a lift. Please visit with a aboard certified plastic surgeon. Good luck!