I started off offering them all food every 3 days. After the non-eaters refused 2 offerings in a row I held off offering until every other scheduled feeding so I wouldn't stress them out. Right now they have been offered food every 5-6 days.

Body condition on one is a bit skinny and I'm seriously considering assist feeding (already started watching youtube videos on the process). They are both very active in their tubs at night and appear to be hunting.

If I have to assist feed what size food item would you recommend?

Aspen bedding: I was told to keep the hatchlings on paper towels but I do have aspen bedding available if that's the consensus.

Food size: I breed rats and mice so I can offer either. The rat pups/crawlers seem a bit big for them. They even seem large for my larger hatchlings (120gram range) which are currently gobbling down mice hoppers.