First snakes don't enjoy being handled they tolerate it and when receiving a new snake it is highly recommended that the snake is not being held until it eats for you.
Now if the snake is 5 months he can take down an adult mouse without a problem, the question is how big is he (weight?) and also what was he fed? When feeding do you feed in the enclosure?
If you are trying to feed F/T to a snake that was offered live it will be an issue and for now feeding what was offered at least as far as prey type is what you need to concentrate on so live will likely bee the best option. Once the animal eats for you on a regular basis you can switch to f/t
Another thing if this is a pet and you want to keep the temp as stable as possible (NO drop), lowering the temps at night can create issues, and unless you have an animal that you intend to breed, I do not recommend dropping temps it.
Also UV are totally unnecessary BP are nocturnal.
So no handling, wait a week and offer live in the enclosure.....that's what I would do.![]()