Hi there, I've read over your posts and I have a couple suggestions for you.
Although I would like to know how long does he feed at each feeding, and do you single side feed or double side?
For your Dreamfeed yes persist with it, it really does help, and it will stop at least the 11pm waking if not the 1am, dreamfeed at about 10:30, the point is for him to sleep through it, don't wake him up, if your breastfeeding and you can pump milk to a bottle that would be easier for the dreamfeed (also you can let dad do it and he'll get bonding time too.) This way he'll still hve breastmilk, and because its a dreamfeed the bottle will not effect his breast feeding.
At this point he will most likely need at least one night feeding, 6 hours is a really a great strech for 14 weeks

your doing a great job. When he wakes at night try resettling and if he doesn't resettle then feed him. You'll want to stop the 1am feed then work on the 4:30 feeding. If you reinstate the dreamfeed that should eliminate the 11pm waking and it will likly do the same with the 1am feeding, or at least move it back. Don't give up on the dreamfeed it could take a few weeks to kick in.
HTH