I use small pots and have to feed more often. I have jugs of supplements (Black Knight, ewc tea, Coots rehydrated kelp and alfalfa) that are blended with sprouted seed tea, grains, coffee grounds, fresh greens, etc. When the soil level drops its time for a top dressing.
The 2 gallon pots are too heavy on my bad days and I can only move one 2 gallon pot at a time on my walker. I can handle 3 small pots in an oil pan. LAB decomposes the dead roots and breaks down amendments. It's like growing in an endless coffee cup but it gets the job done.