I read it, and I’m sure others will chime in. Never a good idea to gently bop a snake on the nose (I wouldn't be hungry if someone smacked my face with pizza)Lightly rub it up against the neck or midsection and see if it takes defensive action like tensing up or pushing back with its coils. Make sure they prey is properly “warmed up”. Of course people are going to mention it’s never a great idea to buy a snake from a chain, You now see why first hand. Also your hot temp is definitely a little high for a juvenile. I just don’t think you should be assist feeding so much. If it takes live to getting going, then that’s what it takes, it’s part of being a snake keeper. Best of luck, hope some of this helped.