Frog being weird

We have a probably 8 month old or so pac-man frog in a tank with the recommended soil and a heater keeping it at a pretty consistent 72 - 74 degrees as well as a mister that keeps the dirt pretty damp. He used to come out and wake up at night but now the only time he is ever not buried is when I dig him up to feed him then he goes straight back underground. Is this normal or what’s the frickin deal?