Need advice on a ball python rescue

[Bogertophis]

...One additional question on feeding. I know feeding every 7-10 days is a normal routine for balls. Since I'm getting a potentially malnourished guy would it be advisable to try and feed him a little more frequently to start? Like maybe trying twice a week for the first week or so? Or is that not a smart decision?

Feeding once a week should be fine...too soon will only get you a regurge, esp. in a nervous newly-rehomed snake. He needs time to digest, & since he's probably
malnourished, feeding prey that is somewhat smaller than his normal fare would be a good idea. In other words, don't rush things. Likewise, if he should refuse
to eat, don't offer too often (less than weekly) as that only further stresses them.

Even in a healthy & well-fed snake, for best results you want to let the snake settle in with NO handling until they've fed easily at least 3 times. I am betting that
with good care & calm respectful handling that you'll have little trouble with him biting. Trust what you see...snakes that are stressed generally look that way.