Hi edgarcat,
There are lots of different things that work for different people.
What I personally did during the night, was bring baby into bed, latch them on and go back to sleep. I would wake up again with a snoring baby who had dropped off the boob then I slid them back in their cot. I found that for me this was the best way of getting sleep and not being wound up watching the clock.
You really get to the stage that you feel angry when the baby wakes and you look at thge clock first thinking 'oh no'.
There were unsettled nights of course where I asked dh to get up and rock them in the pram to give me peace - I knew they did not need any more feeding.
You could try feeding from one side, changing the nappy then feeding again from that same side. You might find he will go longer because he has had more fatty milk.
If that is what you normally, you could try getting him to feed from the second side as well.
Try and make sure he doesn't go much longer than 3 hours, 4 at most throughout the day. If he takes more milk during the day, he may look for less at night.
At night you tend to want to keep things quiet. If you choose not to take him into bed, you might want to try and stimulate him to take a longer feed hence the changing the nappy after one side. Undress him a bit, try skin-to-skin. Babies often feed better when they feel your skin against theirs.
Hopefully there is something here that will help. He will get better and start to go longer soon. Remember to try not to look at the clock