How to stop your period for a day??

I need to know how to stop my period for a day or at least lighten the flow of my period. I’m going to a music festival tomorrow and I’m wearing a really skimpy white outfit and I just got my period and my flow is insanely heavy, especially on the 2nd day. Please give me your best tips on how to lighten my flow!

DISCLAIMER: I know that it is unhealthy to do this so please don’t comment that I “shouldn’t do it” because I’m not looking for judgement, I’m looking for constructive tips.

Thank you!

Edit: I ate like 2 full lemons and ibuprofen and my period stopped for almost the whole day when I usually have insanely heavy flow. Incase anyone was wondering!