Placebo pills

Hey i was wondering if i could take placebo pills a week before the one that it’s supposed to be. I wanted to start my period on the 26th of this month so it ends during march’s first week. You see, i have an event on march 8th, during that weekend im supposed to be on my period but i dont want to. Is that okay? Or should i just skip it? I wanted to have my period still and not just skip it. What am i supposed to do?