The Nova Kool compressor models draw 2-3amps.
Solar systems work well to restore batt life as well as driving the rv.
It would be nice to have a battery bank over 200 amps worth of avl 12v power. Like 2 grp 31's or 2 6v batts . You might get by with 2 grp 27's as well as long as you go easy on the lights and use the water pump for showers and dishes while charging off the genny. Just be conscious about saving 12v power.
Check your batteries condition, have them load tested . With good batts, you'll be fine.
to save amp draws: up to 2 or 3 amps of the below listed items combined.
You could put toggle switches on the, radio/entertainment system when not using it , turn off power antenna, your tv might also draw if 12v and plugged in plus the detectors ... use portable AAA battery detectors in its place.
All these items plus the fridge is eating your power while boondocking.
By installing the toggle switches you should be able to run the fridge thru the night if turning it off is a concern for you.