Question: Minoxidil and Morning shampoo= dry frizzy hair

I have been using minoxidil for a while and have to shampoo every morning or the itching is unbearable. But shampooing makes my hair dry. I already have fine hair with a very oily scalp and not using minoxidil is out of the question. Could you suggest anything which could help me with this. I would be really grateful for any advice♥️