For background, I am a fairly petite woman, currently 5'2 and 143 pounds. I am not new to counting calories: I did it very successfully back in 2018 (lost almost 15 pounds, from 120 to about 107) and then again in 2021 (to much less success, from about 125 to 118). In the past year or so, I've gained nearly 30 pounds, due…