See, that's the thing. In my world, a mandatory weekend a month and a two week summer concentration is all that you are required to do once DP1 is completed. So no sweat having a single,
fully manned company in some outlying area that can raise a full company. I draw the line at having anything like a platoon hanging out in a storefront of a strip mall.
By all means have individual training done as much as possible remotely, but in general, armies work on the basis of teamwork which means a significant time must be spent together - working as a team. You only get so much value doing section battle drills in a parking lot. Full companies, squadrons and batteries is where the real collective work begins.