i just got home and noticed my gecko has started/finishing (as i dont know when it started) it is only on his front feet so far. i dont kow if he's jut starting or finishing shedding

im generally concerned as i've had him now for just over a month now and im pretty sure he hasnt eaten anything. i've tried mealworms, waxworms & crickets but he doesnt seem to want to eat any of these.
i've noticed he's definetly lost weight as his tail is no where near as fat as it was when i first got him