My marriage date will come on 27th day. So I want to prepone my periods to come on 17th or 18th day itself. Please prescribe tablet and how to take it?

Does not work like that, you may see your local doctor but I am not aware of anything they will do for you

Firstly, there is no one here who will be able to prescribe you anything. Only your medical provider can do that. Secondly, Other than birth control pills to regulate, there is no way to "control" your period. Nature comes when Nature wants to. Best wishes on your upcoming wedding, and good luck!

I wanted to add that You can go on different birth control methods which may halt your period altogether, but these may take time to be effective, and do not necessarily stop the menstrual cycle in all women. You can discuss these with your medical professional as well. Good luck.

My wife did this before we were married. She went to her OB/Gyn months before the wedding and get a prescription and schedule for pills to regulate her period so it wouldn't interfere with the honeymoon.

We can't prescribe anything nor is there an OTC med that can do this. So you need to discuss it with your OB/Gyn.