That's ok, you probably didn't check them yet but with spirits all pilot classes but the mecha mook can do infinite healing out of combat if they pick the right spirits, ship captain has a feat to heal mechas stored inside it, Support Staff has options for that too, so it's basically built-in around here that mechas can be fully patched between battles like a crusader with the right stance can heal the whole party by hitting random rocks. Also because the source games also kinda have infinite healing, heck sidekick units often get the ability to repair allies even if they never did so in the show.
Although sometime wonder about making alternate rules limiting healing for a "grittier" campaign. In the other hand even the original Gundam could be patched pretty nicely between battles despite being behind enemy lines half the time and countless Zakus were kept in pristine condition after decades of guerilla action.