I'm going to get flamed for this but sometimes its got to be said! Every baby is different, some are more hungry than others.
Don't kill yourself trying to breastfeed. Your happiness and mental health is vital for a happy child. Some children are easier to breastfeed than others. My two nearly killed me! Cluster feeding was a joke, it wasn't cluster feeding it was all day and all night hell on earth. They were starving.
Personally with ds I stopped at a month old after hellish nights of screaming, no sleep (40mins between feeds), unhappy baby and utter misery for us! Bottles helped with some of it, I got more sleep ds slept for longer. Turned out he was just a rubbish sleeper and frustrated baby so as much as it eased it didn't solve the problem. He still screamed due to colic but not all the time.
Dd is only 8 days old and was worse, cluster feeding from 6pm-3am not sleeping for more than 1hr stretches at anytime. This with ds to look after was not sustainable so bottles it is. This was not an easy decision but one that i am now happy with. 4 days in and she is a different baby!
Formula is not poison, it doesn't hurt your children, its not heroin it's just reinforced milk especially for baby!
You can continue breast feeding knowing that this is what happens with your baby. By seeing the benefits as greater than the suffering it becomes worthwhile. You could combination feed and get a little bit of both worlds. Or just go with bottles.
Don't miss out on your first weeks feeling tortured because of this. For my family it was a question of quality of life for all of us.