How much does Hector weigh? At a year old, and at proper size, mice are probably way too small for him. He could be hungry.

I agree that there can be many reasons why Hector seems off, including shedding, improper husbandry, he's still getting used to his surroundings, etc.

If it's just that he isn't used to handling, short handling sessions, every other day, will help improve trust between the two of you and, in most cases, will get a BP to calm down. As stated if you have him out every day and for long handling sessions, that will stress him out and be counter productive, especially with BP's. My BP, Shayna, will let me know pretty much when it's time to go back. She tells me enough if out for more than 15 minutes or so. I also do not take her out more than 3 times a week as she stresses more easily than my other snakes (corns and a BCI).

Shayna, my 6 year old BP, has always been super friendly and calm and docile. However, after a couple weeks and a three good feedings in her new surroundings (when I first got her), she began hissing at me when I went to pick her up. She did it three times I went to pick her up in a row (over multiple days), either wanting to be left alone, or feeling comfortable in her tank, wanted to stay there, was territorial, or whatever. I called her bluff and picked her up each day and continued to work with her with short, but confident on my part, and totally supporting her, handling sessions. Other than those 3 times, she's never hissed, struck, etc. at me. We learned to trust each other and that I wasn't a threat and she got bigger was less scared, etc.

What enclosure is Hector in?

How much does he weigh?

What, exactly are you feeding (rodent, size, F/T or live, etc)?

How often are you feeding?

What are temps in the tank (taken with a temp gun) - Hot side, ambient temps, and cool side temps.

What heating devices are being used and what is regulating them (what type of thermostat)?

What is humidity?

Is your mom feeding Hector while you are away? Cleaning up waste, etc?

Answering these questions will help us understand if something else is going on and that you are doing what's best for Hector. If not, that could entirely explain his behavior. If so, then we can narrow it down.