undecided needs help

Hi everyone. Any thoughts would be appreciated. I have a job working in the human service field. I've always thought I should be a nurse, but never have done anything about it. Recently, my partner has become disabled, and I am now supporting our family of 4 on my income (around 37K). We are having a tough time making ends meet, and I thought, hey, maybe now is the time to go into nursing. I got into an accelerated BSN program, to start in January. We're hoping my partner could work again, but I'm not sure. I need to start considering the fact that I might need to be the sole income for the family. Is going to nursing school nuts at this point? The family will have to live on loans so I can get through school, and then the job market being so tight, maybe its crazy? I know I cannot live on what I make now, and my kids are little and only going to get more expensive, I need to do something. But not having any job is worse. I know any pay increase going into the nursing might be minimal, but at least possible. I'm really not going to make much more at my current job. My current job may or may not continue (we just had a round of layoffs a few months ago, I was safe this time around, but who knows). I'm not sure I will find a job in my current field for the same $$ if I do get let go. My goal would be to go into some kind of advanced practice once I graduate and get some experience (not sure what yet though), but I guess that is everyone's goal, huh? I'm confused, any suggestions? I know its a choice I have to make myself, but insight from those that are in a similar situation, or have an opinion, I'm all ears.