My DS was a non-stop feeder. He weighed 9lbs at birth and for the first 3 months put on 1lb a week and he fed and fed and fed.
It was exhausting. All I seemed to do was feed him and sleep. My solution, probably total anathema these days, was to introduce a very small quantity of solids, a couple of teaspoons of very sloppy cereal and milk, at about 2 months before each feed. This took the edge off his appetite for breast milk, although he still seemed to consume gallons!
At night, I picked him up and fed him the moment he started waking. As soon as he stopped feeding I laid him straight back in his cot; no winding, no changing, no cuddles. I did this in the dark, to inhibit waking, that way he never properly woke, ate less and by six weeks slept through the night, which gave me a good nights sleep and some respite as well.
At six months I decided I had to have more in my life than feeding him, recuperating and feeding again and I weaned him onto a bottle.
The irony is, that at 18 months after a 24 hours with a raised temperature, he lost his appetite completely and for the the next 10 years, was a picky eater with a small intake. then puberty struck!
At 45 he is still a big eater (not overweight) and fit and healthy.