I switched to a new key layout and was slowed down for like a month, and almost every day I could literally feel myself speeding back up. It was such a cool experience, and one that I imagine has beneficial like neural effects, that sometimes I think about switching it up just for fun.

I’d suggest just sticking with it. I now use English, German, and my custom Workman layout at home without any issue switching between them. Practice makes perfect and cause a bunch of work and fun things encourage typing a lot, practice comes easy and getting back to your normal speed happens quickly.

Picking a new layout like Workman or Dvorak where you can feel the benefits, plus a split keyboard’s ergonomic benefits, and I think anyone would struggle to go back (assuming they do it for a month and give it a fair shake).