Losing more weight from second postpartum than first ?

I’m going to try to make this make sense . Lol . So is it possible on your second pregnancy, after you give birth to lose that pregnancy weight PLUS your first pregnancy weight ? My first pregnancy I weight 120-126lbs (pre-pregnancy) by time I gave birth I was about 160 I think. My daughter is now almost 2 and I weigh 146lbs and I believe my abdominal wall tore and since I gave birth to her I always still looked 5 months pregnant. With my first pregnancy I never exercised or been active , nothing . I just ate ALOT and watched tv . Now I’m 15weeks pregnant and I walk way more than my other pregnancy, I’m not eating tones of food. And I’m more active . And I’m going to breast feed again . So is it possible I can lose this pregnancy’s fat along with the first pregnancy fat by just breast feeding ( I know I will have to work out and things but I’m just wondering about breast feeding first)