Just looked at the date on this so it would have been DS2 - no, sorry it didn't work
IIRC I developed quite bad nursing aversion later on in the pregnancy so basically couldn't stand to feed him for more than a couple of seconds at a time and kept cutting him off early and that essentially caused him to wean entirely, which meant that he would then accept DH if he went in at night. But actually his sleep has just always been the most disrupted of all the DC. He even woke up tonight upset because he needed a poo. I am not sure that any method would have helped much because he is just sensitive and has an extremely overactive mind.
I did get one helpful thing from it. I found that it gave me a bit of confidence that I didn't necessarily need to rush straight to fixing the issue in the exact way he wanted. I could go in a bit more slowly, be moving towards him but not feel the rush/panic/like it was something so urgent that I really needed to fix. Basically the "being OK" with their feelings as somebody else mentioned earlier in the thread. I feel like this was a big shift for me.
Ultimately I found the best approach was what I did with DS3 - co-sleep without even trying to change this until I was ready to fully commit to making a change, and then set myself up for success and have clear boundaries for myself about what I would do and a "get out clause" that I could actually stick to. When I just tried to wait and see how it went, nothing changed and I ended up exhausted and then I couldn't stick to the plan (like my 4am thing).
So for DS3 I decided my aim was to keep him in his own room rather than bringing him through to our bed but I still nursed if he wanted it. I had learnt from DS2 I could go in slowly and sort of be moving towards feeding but rock a bit first, and I had learnt about cutting off early so I did that a bit and sometimes he'd then go back to sleep in my arms without feeding. So I did that but my get out clause was - if I have 3 failed putdowns, if he wakes again less than 30 mins after the previous one, if it gets to 1am or later, I can bring him back to our bed. I found fairly frequently, it was just when I was getting to the point of feeling like this was a failure, it was pointless, it was never going to work etc, and I'd look at my phone and say OK I will stay 20 more minutes, or it would be 00:45 or something and once I'd registered that no it would not last forever and I would be able to escape, he'd almost immediately fall asleep. I don't know if it was that I relaxed, or that I would get to that feeling when it had been a long time but it was an interesting thing to learn about myself.
Also because I was determined to settle in for the long haul of sticking to my goal I downloaded a load of old favourite books like I think I reread most of Harry Potter during this period and then a load of Jacqueline Wilson, so I had a more immediate incentive to stay there trying as well.
Once he figured out that I wasn't going to take him back to our bed if he asked me enough times, he started to settle in to the routine of being settled back to sleep in his own room and then after a few more weeks of that he just stopped waking up. Completely surprised me. I think it took about 3 months in the end and he was much younger than it had happened with the other two, about 14-17mo I think?