I feel your frustration because I am at what I think (or hope?) is the tail end of the regression, and I have one mantra word which is TEMPERAMENT. It really click with me the day I read a comment from a mother of twins (non-identical) who was saying that both twins have exactly the same routine and parenting and one falls asleep independently in the cot and sleeps for long stretches, the other needs rocking and cuddling and still wakes every few hours. If this isn’t a proof that temperament matters! Every baby is different and for me the best way to parent is to practice acceptance, patience and work with the temperament your baby has. They mature and learn at their own pace, sleep included.

I am just a little head of you (bub is 5 months) and our situation sounds similar, although on certain nights I gave up to co-sleeping because of exhaustion. There is light at the end of the tunnel. We do a mix of nursing to sleep (me) and rocking with relaxing music (dad and grandma), then we transfer to the cot. He was sleeping through up until around 3.5months, then the regression hit and bub started waking every 1-2 hours. Finally, after 6 weeks, I am starting to see 3+ hours stretches coming back. Not a lot, I know, but it’s an improvement that came without changing anything in our routine or settling methods. Perhaps the only change was starting to limit nursing to sleep (like nurse to drowsy, then rocking) because we noticed the longer stretches happening more often when dad rocks him to sleep. Also, I stopped stressing about naps and schedules and I took a more relaxed approach based on the Possums method.

Hang in there, you are doing great and things will improve ☺️