Any tips on how to be routine while pitching??
Routine as in?
The only way to develop and maintain a routine is through repetition.
Best advice I can give you is to keep yourself in the moment. Concentrate on the pitch you are about to deliver. Don’t get ahead of yourself.
My kid likes to roll the baseball in his hand as he walks up the mound. He says it clears his head.
Do everything the same way, it’s a routine, mechanics should never be different and it doesn’t start at how you throw the ball.
Muscle memory and doing what throws the most strikes is key for having a good routine. Also, if nothing is going right on the mound(that you can control, not fielding errors), feel free to change into something else so that it works.