Maturity mismatch but no currency mismatch

There are only future contracts with a maturity of 1 year, so the forward contract will
still have 6 months to go when the EUR 400,000 are received. How would I determine the optimal hedge ratio, and would I would implement the strategy to hedge the exposure of EUR 400,000.

(I have the effective 3 month rates and exchange rates for 8 months)