Can i get lipo twice a year?

Liposuction should not be used as a replacement for healthy and active lifestyle. You will probably develop lots of visceral fat if you don't have a healthy lifestyle and liposuction will not help in addressing visceral fat

Liposuction is surgery to remove a localized area of fat and not done as maintenance. Your weight should be controlled by diet and not with liposuction, or you can consider bariatric surgery which will control your weight.

While you may have several liposuctions you change your size and shape, there is an issue with your logic. After liposuction, the fat cells are permanently removed. You may re-liposuction an area once or maybe even twice more. Once the fat cell count reduces, the fat goes elsewhere…most commonly internally (called visceral fat).
Visceral fat cannot be liposuctioned as it is wrapped around vital internal abdominal organs. It is only reduced with diet and exercise.
Once you hit this stage, your belly and sides will be round with no surgical option