Keep on it, you'll get it. Mistakes happen, accidents happen, weird riding conditions happen, and even platformers fall off sometimes. Don't let your DH grow that seed of doubt inside you. Be confident, get out there and try again, and over time you'll get better and better.

I fell twice in silly mistakes, and after that, I calmed down, took it easy, and also did some rides by myself that helped me raise my confidence. I can handle being told what to do, but sometimes I need to take that information and go figure it out on my own without someone telling me "you're doing great" or "if you'd only done this better..." all the time. Maybe you could use some "practice time" by yourself, too

In the end, more time on the bike with clipless pedals makes it easier. Don't let it stress you out or it'll get harder than it should be. If you have to take a break and go back to platforms, so be it, but make that YOUR decision.