I recently bought a Microsoft ergonomic keyboard. It’s a split design but still one piece. It took me about a week to get used to. As a touch typist I had one

I recently bought a Microsoft ergonomic keyboard. It’s a split design but still one piece. It took me about a week to get used to. As a touch typist I had one key that Microsoft stuck on the left, that I type with the right, B, which is dead center on the bottom row on a usual keyboard. I don’t know which hand it canonically belongs to but it didn’t take me long to switch. I purchased this more proactively and it’s probably unnecessary. I did get RSI symptoms while working preCOVID. When I switched to work from home, I used my Microsoft media keyboard and Logitech mxMaster mouse. The RSI went away. We briefly returned to the office and within a week I was getting pain in my right hand again. The office mouse was a cheap flatter Logitech mouse with no tilt or thumb test. I believe that mousing about was the actual cause of my RSI and that the improved grip of the mxMaster was enough to fix it. Like OP sometimes it can just be small changes.