I agree with Parker. I'd just let them sleep and plan on a late night wale up and feed and get ready for bed then
Let him sleep. Sometimes I am so tired I go to bed before proper dinner. He will wake hungry and you can feed him then :)
I was in a similar situation, I just let him sleep and he woke up and ate heaps of food and was happy as!
I’d say Let him sleep & feed him if he wakes up (: then try a bath / shower to help reset the bed time routine / rhythm.