Fire - I definitely find that she is inclined to feed more whilst co-sleeping but I think that is somewhat because every time she stirs the buffet gets put in her face. Have you tried not offering it as such unless he is searching it out? I found that I was overfeeding her because I mistook wind movements for needing more food.

The marathon feeding is lightening off for us with that realisation. I'd be looking at it as if the buffet only opens every 2 hours to start with and see if it makes a difference to the feeding.