Starting .025% tret gel

Hello! I’m new to tret and would like some help figuring out where/ how to incorporate this into my routine. I feel like I’ve seen different methods to starting, is it just trial and error? Hoping to decrease hormonal acne/ hyperpigmentation and use for anti aging (34F). Thank you! am: LRP gentle cream cleanser, cetaphil moisturizing cream in the tub, isntree hyaluronic acid watery sungel spf50 pm: clinique cleansing balm and LRP gentle cream cleanser. rx azaleic acid then cetaphil moisturizing cream again. sometimes i’ll add vaseline after the cetaphil if im feeling dry. Appreciate any insight/ how tos here.