Comrade, we've all been there when so tired we can't remember. I did the night feeds one night and had no recollection of them at all, couldn't tell you when, how often, or how long he had fed for.
DP put Oscar in the moses basket this morning. He put him in so his head was at the foot end, right at the end of the basket, with a blanket by his face. I asked him why - he couldn't tell me why! He was like errrrr did I, wtf?!
I have no suggestions, as I slept most of the night feeds
once he was on, waking every few minutes when he would come off for a splutter, and then go back on. 
Hope you feel better soon.