I was a dorico early adopter (gave up on Sibelius as soon as I could since there was no life in it at that time). That said, even though I was Willing & EAGER to learn Dorico, I had a few frustrating moments too.
I distinctly remember working on one document with a bit of a time crunch and spending close to 15 minutes going through all the same menus because I couldn’t for the life of me remember where a setting was that I needed to adjust. Engraving options? Didn’t see it there… I think I went through all the appropriate sub-areas that could have house the feature… didn’t see it in notation options… layout options? I don’t see it… where the heck is it??? Repeat. By the end I was getting terribly frustrated. All of that said, now that my mental map is clear, I fly through most tasks in a way I never did with Sibelius (or certainly finale before that!). Now that I know the settings I need to adjust the most and where to find them (and their respective key commands) it is a breeze. It just took the effort of plowing ahead through that period of frustration.