Does using Differin Gel every other night to the scalp with Minoxidil 5% twice a day cause hair loss?

I'm experiencing hair loss/thinning for 6-7 months. Dermatologist recommended the use of Minoxidil for Men 5% Hair Regrowth Treatment. Used Minoxidil for 2+ weeks with no noticeable difference or improvement. Recommendation was to continue using Minolidil and add Differin Gel OTC every other night. I've read poor reviews about hair loss after using Differin. Can you confirm that the users are correct with their conclusion of using the gel and their loss of hair?