You could just make a one-off payment to your fuel company & reduce your DD for the next 12 months?
I prefer to think of the WFP as a savings pot that I've been paying into at £16 a month for the last year - as part of my DD to OVO - and now it's mine to spend as I wish.
Ours has gone into the bank already. My Husband has had his letter, but I haven't had mine yet. Having a lot of essentials to pay for, so it will help with that.