Hi, I used overnight feeds all the time I had the PEG tube. I was sleeping fairly propped up anyway, to help with the coughing and swelling. I don't remember any particular problems. I was waking up a few times a night at that time anyway.
I was on 1500ml of concentrated feed per day, so I set my pump to 150ml/hr, so it would complete in 10 hours. I needed the 10 hours in bed in those days because of the fatigue and interrupted sleep.
Hope this helps!
John