anyone else in their 40s trying to figure out wrinkles and what to add next

this is pretty much my current routine and i actually feel like my skin is in a good place overall more calm and much healthier looking i’ve been really consistent with it and i don’t want to throw that off my only concern is my skin can be a bit sensitive and i’m also doing light therapy a few times a week so i don’t want to make things worse or irritate my skin

I want to add something else to my routine and for those who use retinol or tret alongside a simple routine like this how did you introduce it and did it work well with light therapy? any recommendations on what worked for you without causing irritation would really help because i never did any of them before