I would ask a community nurse for advice on his. I’m sure it comes up often.

Oh honey this was me until a few months ago. I found that it wasn’t until I stopped breastfeeding that my bub would sleep properly. It was as if he was waking purposefully to keep comfort suckling. I had to transition to bottles and pumping, then I decided to go to formula. Not something everyone wants to do, I understand. Then after he was comfortable on bottles, I did a very very light Ferber method. I couldn’t stay in the room while he was in the cot, he would go ballistic. Every minute I would go in and comfort. The first night was hard, half an hour until he slept. Second night, 10mins. Third, 2 mins. He’s now sleeping through the night in his cot 12 hours. I was rocking him to sleep until 10 months old until it was too much, we were both only getting 7 hours a night. I recommend you look up sleep training methods and find one that you’re comfortable with. Good luck, I hope you’re well rested soon!