Taking on to care for another living being is not easy, dogs or humans. The responsibility to ensure their safety and wellbeing. Taking care of one's own need is a full time job own it's own, what more having to care for another.
You might have bite off too much than you can chew ts. It can be hard to let go, but sometimes you need to. That's why I don't judge when people give up their kids for adoption, I don't agree with it, but at times, some people might really not be up for it. Not saying it's the right thing, but it's the lesser of 2 evils, which I can't stand to judge, because I have not been in that shoe, and i hope i never have to.