I have been in this situation... and I don't recommend it. When I remarried 4 years ago, I moved my family to my new husband's home and put a FOR SALE sign on mine. Because I didn't want it sitting open over the winter, when fall rolled around, I rented it out. My rent covered my large mortgage, but I paid heat/sewer/water/trash/taxes/insurance (because if I would have made someone else pay any/all of that, I would have never found anyone to rent it). To the point, I was putting at minimum $300/month toward that rental. While it's true that if I had held onto it until the mortgage was paid, I would have a little cash flow then... the stress and the headache until that point is not something I would advise. I was lucky never to have a vacancy in 4 years, but if I would have, it would have sunk me.
I had an emotional attachment to that house, and when it finally sold this past summer, I had a really hard time. HOWEVER, selling it opened many doors for me that were previously locked tight -- like investing in real estate with cash flow! :)
If it's too late to get out of this deal, my advice would be to build-up your cash reserves/emergency fund so you don't have to stress over vacancies and/or repairs/maintenance. Good luck!