These guys are easy but nowhere near as forgiving as a rat snake with their care. First words of advice, leave him alone until he eats. Second, in order for him to eat his environment must be right.
Please read the following and remember a thermostat is a must with ball pythons.
https://ball-pythons.net/forums/show...ius)-Caresheet
https://ball-pythons.net/forums/show...With-Pictures! (better to use a tub but you already have glass)
Read the stickies here
Welcome and good luck. There are a lot of people on here with a lot of snakes that are full of good advise.