Burned my skin

I’ve been using Tret .025% since Feb 27th, always sandwhich method with either Cera ve moisturizer or the Bubble moisturizer.
Slowly moved up to nightly application for the past month.
Bought from a different supplier, and did it two nights in a row (normal for me) and now my skin is RUINED. Flaking, burning with ANY product application (even moisturizer) and I don’t know what to do.
I get married next weekend- so PLEASE any tips tricks or things I should implement in the meantime??
I stopped tret 2 days ago when I noticed the burning. Stopped all my normal skincare because of the burning, and have just been using Laroche Posay B5 balm, & aquaphor.