Battery/electrical experts -- question on refrigerator

I have a small dorm fridge in my smaller toyhauler. Power is a pair of GC. Batteries run the frige on a MSW inverter, lights, furnace etc. When not running the furnace, I can usually go two full days before the batteries are at 50% SOC and I need to run the generator. That is with using interior lights when needed. And the dorm fridges aren't that energy efficient, how many WH/day it uses vs. a good fridge don't know. Fridge usually has about a 25% duty cycle, draws about 10Amps from the battery when running.