I’m sooo sorry to hear about the difficulty with IUI 🙁
I have lots of experience with dilators, so I can tell you that dilator progress was very slow and steady for me too, but it’s all about persistence and consistency! Try and do 10-20 minutes every day while doing something you enjoy like watching TV shows or youtube videos on your phone. I definitely felt discouraged at some points (especially on days where it felt like my progress had gone backwards and I wasn’t able to fit a dilator in comfortably that I had before) – but I kept with it and was eventually able to “graduate” and comfortably fit even the largest in!
I would just tell you to stick with it, try deep breathing exercises to relax yourself before and during, and try and do something you enjoy while dilating 🙂
Hope that helps and keep us updated!