The key to getting your ex back is not in the routines, but in the sincerity. If you just want to find some routines to confuse your ex, then you will only end up making the other person more and more distant from you. On the contrary, if you are willing to stand in the other person's point of view to think about the problem, seriously think about the reasons why you broke up, and sincerely apologize to each other, then you may have a chance of success in getting your ex back.
What you need to show in the process of getting your ex back is your change and growth. If you don't really recognize your problems and don't take real action to fix them, then your actions to get back are meaningless. On the contrary, if you are able to identify your problems, actively seek help, and show your changes and growth, then your chances of successfully getting your ex back will improve.
Finally, you need to give the other person enough time to think about your future. Getting your ex back is not an overnight process, it requires you to wait and give patiently. If you are too pushy and make the other person feel disturbed and annoyed, then you will backfire instead. Instead, if you can respect the other person's feelings and give them enough time and space to think about your future, then you may win the final victory for yourself.