Can gdb's tui be divided into three windows?

Question

1. When I use gdb tui for debugging. I can use layout split to display the source code window and assembly window at the same time. But I also want to see the value of the register. If I use layout regs to display the register window, it will replace the source code window with the register window. Can I display source code, assembly code, and register windows at the same time?
2. When tui is displayed, I want to use the commands I used before. When I use the up and down arrow keys, the code window moves up and down. Is there any way to prevent me from re-entering the previously used commands?