Sounds like a good plan. I spaced out DD by hugging/rocking/pacing/cuddling/singing every time she woke until around 4am when nothing would settle her and I thought she was genuinely hungry. I thought it was quite reasonable since she was used to having a feed every two hours.

Will he take milk from a bottle or cup? I always offered DD a drink from a straw cup when she woke just in case she was thirsty. When she had a drink it was usually enough to settle her down and she would cuddle back to sleep. Eventually she forgot about BF and was happy to be presented with the cup. After a couple of months she didn't even want that.

Good luck and stay strong. It is not very nice when they won't settle and you know they just want a BF but if you stick with it then it really is only the first few nights that are the worst. DD took probably a month to fully give up on the idea of getting a feed but after the first 3-4 nights it was more of a token gesture on the off chance that I would give in iykwim.