Can slight bottoming out be fixed through the areola incision & by going from 375cc MP to 650-700 HP?

The incision can be used, unless it is tiny. But, going larger will just make you bottom out even sooner. Do not go larger but go smaller. You are bottoming out now because your tissue cannot support the current weight. The 650-700 cc implants very heavy. For most women, they are too heavy for your neck and shoulders. Go smaller and consider mesh for better support.

In general, no this would not fix the problem. Bottoming out of implants is usually associated more with implants that are too large, which leads to malposition on the chest wall. Going up in size would only make this worse. In addition, it would be difficult to place a 650 cc implant through an areolar incision, unless you are using saline. Best of luck!