I would wipe out the remaining Allied fleet on G2. Chances are that you lose 2 of of your planes which isn’t great but is very manageable. If you get totally diced and lose 4 or 5 German planes, it might be a sign that the dice gods are against you and you might want to restart.
You are a tad bit behind a “normal” opening, but if you still have that bomber and some fast movers, Italy can clear the way into Russian territory. Just make sure that Rome is not lost and you have done your job. Germany can eventually capture Greece without much loss. The game will go on. It is easy to make up the lost ground if the Allies make any small mistake like miscalculating a fleet battle in the Pacific.
The only times that I restart early game is if I get totally diced in France and lose all of my German fast movers that are so necessary to pressure Russia later on. Hard to recover from that swing.