I’m sorry you are going through a hard time!
I haven’t gone through a situation like that exactly, but I have spent long stretches of time away from my buns when I’ve lived abroad for work. I was away for 10 months at one point, and I can tell you my bun at the time did not hold a grudge or anything like that!
I also adopted Bertha, one of my past buns, from a friend who could no longer keep her due to some serious life upheaval. My friend (her previous owner) would visit and pet sit usually once a year, and I could tell Bertha recognized her and was happy to see her. She was very happy with us too, so it wasn’t like she was depressed.
So I think that as long as your family can provide good care, your bun will be just fine while you’re away and will be happy to see you when you return.
As for housing and the escaping issue, I really like NIC cube grids. You can use them to make a roof for an x-pen, or you can build a NIC cube condo as an alternative housing. Or you could even use them to build up the x-pen fence to be taller so he can’t jump over.
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The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.