Although I don’t have a problem sleeping (yet) I too have tried all different meds to try and get rid of this constant drip. Sometimes I fell like the drip is stuck behind my nose and sometimes I feel like it’s in my throat. Hard to isolate the problem. It’s a constant distraction from totally enjoying the day. I think mine is Covid vaccine related, although that is just conjecture. I just want this to go away, as you do. I just keep trying different meds. I try not to take more than one type at a time so I can at least figure out which one is working.