Help/Advice please

Just got a new leo I am not sure of gender but I am just calling them Alfredo or Alfie. Just got them on Christmas Eve from a old family friend. I don't know the Morph, Gender, or if they are too thin. I also can't get them to eat, I have tried crickets which is what I was told to feed them (tried by hand, leaving them in tank, and with tweezers.) Alfredo seems to be a happy lil one, but I am scared that I am not doing enough.

Alfredo is still very small so I have their tank lined with damp paper towels for now, I have 3 hides for them (1 warm, 1 that's constantly damp and mid temp, and then one on the cooler side), I am currently making them some more things to climb on, and I have some fake plants in their tank. I already got the proper heating and UVB bulbs, and thermometers.

Any recommendations on how to get them to eat? And any tips for all care would be highly appreciated! Thank you all in advance!