From: Palo Alto, CA
I think Axis should pull their units out of USSR as soon as possible. No need to give USSR any extra production when Germany do not gain anything from staying there.
Flee to the hinterlands, and there, force them Soviets to move into Prussia with some trick, like leaving it undefended.
From there, gather your cheapest garbage units into fortress Europe. Make three strong killstacks in the west and the east, and build at least 1 offensive a turn. Don't forget that Atlantic wall either. Them brits can march down the coast, expunging German units the whole way. Use those offensives for counter-attacking or super-combined actions.
Good play may see Germans clinging on in '44.
Most men can survive adversity, the true test of a man's character is power. -Abraham Lincoln