You do have a problem-You don't have a chance of getting there with the fuel remaining.
I would return to France-fuel and load out with what torps are available and head to Asia.
I would take a route that would minimize any encounters with warships( perhaps hugging the coast of Afrika), avoid any contact with convoys if possible. Solo merchants would be my only targets.
The important thing, for me, would be just get there.
Look forward to how you will proceed.