Brazilian Butt Lift - Will 350cc Each Side Make a Difference?

Hello dear!!
Thanks for the question and provided information as well. 
Unfortunately, without pictures, it is very difficult to give you a proper answer. l recommend you to make an appointment with a board certified plastic surgeon to talk about your goals and anything you need to know.
Good luck :)

It sounds like your plastic surgeon was very thorough and honest during your consult and managing your expectations. 350cc can make a nice difference if your relatively petite. The larger your body frame the less noticeable 350cc will be.

If that is all the fat you have to work with, then that is better than throwing it away. It is also better than having buttocks implants. Implants tend to feel and look fake and have a very high complication rate.
As far as the fat volume, I have placed much more than that in many patients and gotten beautiful results. I have also placed less than that in a few patients with very nice results.
The nice thing about the Brazilian Butt Lift, when done by experienced surgeons, is that it can give you a Beautiful shape to your figure, not just enlarge your buttocks like implants do. This is due to taking the fat out from the correct areas as well as placing it in your buttocks in a way that it survives, enlarging your buttocks. It is this combination of the correct fat removal along with getting the fat to survive that makes the Brazilian Butt Lift so dramatic!!!