I'd agree with the lay down feeds as well - even if you think you can't give it a try.
I could never feed DD laying down yet it's been easy as with DS. He had a growth spurt earlier in the week and was on the boob every hour for two days - this was the only way I survived! I found that even though I'm not used to co-sleeping and we don't usually do it, I was super aware that he was there and I never felt like I would roll on him.
Good luck you just gotta do what you can to get through!