Hey Sharla,
You might want to try keeping the back supported at all times.
Ironically my father has a back problem and it was an Austrailian guy who comes over during the summer who taught him how to look after his back like this.
He uses a "back warner." Almost like a belt, 12 inches thisck which circles his back and keeps pressure on it. It doesn't cure the problem but it will prevent it flairing up before the fight and may allow you to train more.

I myself am going to invest in a heap of Neoprene shirts. Mayb Ever shield by Everlast (SINCE THE uS DOLLAR IS SO WEAK AT THE MOMENT!) to support my shoulder and theoretically prevent it flaring up before February, mayb it's worth a go?