How to implement button reuse in telegrambot?

Question

Bots

I'm making a keyboard using ReplyKeyboardMarkup.
With two buttons, such as B1 and B2.
I want that when the buttons are pressed, some action is performed, while the keyboard does not disappear and it would be possible to press the buttons again in any sequence.
If you do it through bot.register_next_step_handler(msg, process_step)
AND do processing in process_step, then a message (button text) appears in the feed. Also, if you spell B1, then the event will also be processed.
Can this be avoided?
Those. so that nothing happens when typing, only on click.