If I put 4oz of solid chicken on my plate, I'm sure that I would STRUGGLE through eating it. But when it's 4oz of a mix of things, some chicken, some fruit, some cheese, etc -- it's much easier. So in this case, it could have less to do with how much you're eating as WHAT you're eating?
Honestly, until recently I found many meats very difficult. I'm 8 months out now and its' settled a lot, but it's still easier for me to do cheese...