Should I start new skincare routine one month before event?

TLDR: 35 year old female with dry, semi-sensitive skin. I just ordered a night cream containing 0.025% Tretinoin, should I wait to incorporate this into my routine until after my big event (a month away)?

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I have never used Tretinoin, however, everyone in this sub raves about it; I went on Musely to get an Rx for their night cream, containing 0.025% tretinoin. I currently use vitamin C serum, Bakuchiol oil, and sunscreen in the AM, daily.

Twice a week in the PM, I use a retinol facial serum. Should I wait to incorporate the Tret into my routine, until after a big event I am attending in early March?

I am worried that adding something new into my routine will make my skin, initially, freak out. Aside from normal fine lines and wrinkles, for my age, 35; my skin looks healthy and pretty dang good. But alas, I’m always looking for ways to gracefully age, and the results I’ve seen from tret users is impressive.

Any advice or personal experiences with starting tretinoin is greatly appreciated. Thanks!