should I pickup/put down until morning and not give him a feed until morning?
Someone can correct me if I am wrong, but I think PUPD is meant for older babies, and at this stage you would use shh/pat or a version of it. With my youngest I did a DF and she woke for 2 feeds (which were roughly the same time as your LO) I did feed her both times as it was clear she was hungry, and she kept that up until she was 5.5 months old. Her first am feed wasn't the best, but I gave her a top up before her first nap and it worked out.
What about pushing the DF out a bit and seeing if he will push the 1 am feed ahead too and then only have the DF and one NF? I think we did the DF at around 10:45/11:00.