First it's a lot of food so it maybe eating without you noticing, at that size I feed the equivalent of a bottle cap (coke) every other day even that is more food than needed.
Second the enclosure make sure it is not to big usually for hatchling ang juvies I recommend nothing bigger than a critter keeper.
Third the food those days rephashy is not what it used to be and a lot of gecko will refuse it, try Pangea Diet watermelon mango, banana apricot, or fruit mix with insect, they will rarely refuse that food and more and more breeders use it for that reason. Consistency can also be an issue try to get a ketchup like consistency.
And of course make sure your husbandry is correct to low of temperatures or too high and you can have issues.