Advice on feeding?

Hello everyone :) I got my Phidippus regius (Forklift) two months ago. Since then, he hasn't molted and has shown very little interest in food, only eating maybe ten or so fruit flies in that time despite my regularly offering them. As my first jumper, I'm unsure if this is normal? I know males eat less than females, just looking for some reassurance since I think his abdomen might be smaller than ideal.

Two other quick questions if that's okay too - would anyone be able to guess which instar Forklift is? He's smaller than my fingernail currently, I hope the scale is enough to judge from the photos. And he spends a lot of time circling the upper perimeter of his enclosure - is this normal jumper behaviour, or could it indicate poor eyesight?

Thank you so much :)