Small baby pacman frog not eating (just got)

Hello, i just got my Baby fantasy pacman frog in the mail tuesday morning. Placed it in a 10G(it uses all of the space, its moving around quite a bit, find it in new dug up burrows every time i wake up, and he’s 75-80 degrees, and i mist him 2-3 times a day. The substrate was 1.5” but today i upgraded it to about 3-4” but idk haven’t measured. I offered him crickets Wednesday, he didn’t want them so i just gave them to my leopard gecko. Next day i didn’t give him anything, then i tried feeding him mealworms friday. He refused. Yesterday he refused, and i left him alone in a tiny tub/container with 3 meal worms for 30 mins today in a quiet room and he refused. He isn’t scrawny and he gets around. Should i be concerned he hasn’t eaten since tuesday,to now, sunday. How long can they fo without food. I had pacmans in the past and they’d happily eat on the second day or so. Idk if appetites are diffrrent between species, my past frogs were cranwelli, this is a fantasy( Cranwelli x Cornuta)