hoggie losing weight :( help

my udon (swipe for pics) was hatched on june 21 2023 so he’s about 14 months old. i just saw a post where someone was saying their 1 year old hoggie was 80g but udon weighs a quarter of that. i feed him large pinky mice that are about 4g (~20% of his weight) every week. he always eats well, mostly forceps-fed but sometimes i leave a mouse on a paper towel and it’s gone immediately (like over the span of an hour).

however, he’s lost weight and i’m not sure if he’s losing a significant amount of weight or not. on one hand, 1g is so little but on the other, it’s about 5% of his original body weight. i included a chart i keep of feedings and weighings. if you tap on it you’ll get a better view. i don’t know why but i forgot to include the feeding for 07/17 (one pinky mouse, didn’t get a chance to weigh him).

should i feed him more or add anything supplemental to keep his weight going up? he’s a very little guy, about 12-13 inches at the most. i’m just worried that i’m doing something wrong :\