Hey Leash,
I don't think there's anything wrong with feeding back to sleep, especially if it is what works to help you get back to sleep sooner! Jake is 1 now and I still bf him overnight to get him back to sleep, he won't settle for anything else with me and DH doesn't get up to him either (he does have athritis which tends to become a bit more painful some nights) so I say do what you gotta do babe!