Just an after thought....When Charlotte was being funny, I would put her on a pillow to feed. Just a normal bed pillow across my lap and feed her on that. (with your arms UNDER the pillow, so you arent actually touching bubs) So when she would drop off or nearly drop off, I would put hat pillow into the cot.
I found it didn't disturb her as much and she didnt have to go from her head resting somewhere warm to the cold bed sheets iykwim.
A hot water bottle in the cot used to help with transition too as it prewarmed the space, and lessened the shock. Also when you put him down, take out the arm under his head last....dont know why, but it makes a difference most of the time.

You are doing a fabby job hun! He'll come a round...This too shall pass!