Baby seems thin... Help! New ball python owner

[200xth]

82g at 2.5 months seems okay to me. Maybe a bit on the small side, but nothing major in any way.

People usually feed their hatchlings anything from once every 3 days to once every 5 days. Probably 4 or 5 days would be good. For what it's worth, and this is subject to change or odd circumstances, I try to do 4 days to 200g, 5 days from 200g to 500g, and 7 days after 500g. Doesn't always work out that way, though. As long as you're feeding him regularly, and the correct size you're good to go.

If you have a scale and want to weigh your food, 10% to 15% of bodyweight is the normal guideline. This usually means mice until he's over 100g. If you have no scale, I would just do mice to 100 or 110 and switch to smaller rat pups at that point. You want something about as big around as the snake is wide at his widest point.

I usually feed my snakes the day I get them. I want to see their feeding response. Most people say wait a week. This is up to you. Nothing terrible will happen if you do either.

Basically, I don't think he's too thin, and if he is a little on the small side, a normal feeding regiment will get him back on track in no time at that young age.