First, if “my doctor” is just your family doctor, go see a dermatologist. Rule out anything more serious than dry skin. Assuming it's just dryness, here's my advice:
1. Hydration: My kidney doctor told me 64oz of water isn't enough; aim for at least 90oz. It helps with kidney stones and my skin. Plus, there are other benefits when you're using Mounjaro.
2. Moisturizing: I'm 71 and I've tried almost every cream/lotion out there. A two-step process works best. Right after showering or bathing, use a thick cream or lotion to add moisture. Immediately after, apply body oil to seal it in (otherwise the lotion evaporates). Don't skip the oil!
Also, your bath soap can dry you out. Look for moisturizing soaps with oils like olive oil, coconut oil, or goat milk (farmer's markets are great). And if you used to sunbathe like I did, stop now.