tummy troubles

Hi there Glow users! was wondering if anyone could help a fellow sister out. Does anyone have any recommendations for a very busy mama who has little to no spare time with 2 boys under 15 months to loose the little bit of a stomach pouch and tighten it back up, as well as loose abit of upper arm chub? already eat extremely well with plenty of protein and veggies and am on my feet all day. but nothing seems to work. i do abit of weights and HIITs when i can manage to squeeze them in too. Any help is appreciated! Thanks!