Can I increase the fat after doing facial BBL?

Hi, I had a facial BBL six months ago. The fat retention is approximately 40% in the neck, 20% under the chin, and 35% in the buccal fat area. The results are fine, but I feel like too much fat was removed. I would like to know if I can regain 10% more fat in the above-mentioned areas by eating more. Also, my body type is that I can easily gain weight if I eat sufficiently.