Should I gain it back or just maintain? (Photo)

Getting airsculpt+ on my arms, chin, armpits, andback bra rolls. My weight has always fluctuated I’ve been anywhere from 118-153. Recently I was 153 lbs and over the past month and a half I’ve gotten down to 146.5 (healthily). Will the fat that was there at one point be able to get sucked out now or should I try to gain it back in time for the procedure to get it all out. I have less of a double chin & arm fat now but I know if I slip up on this diet it will come back quickly