Heya,
I wash twice a day, 3x if I have dance rehearsal. Since I've become an aesthetician, I've learned a ton about why washing at least 2xs with an actual cleanser is so important. Your skin is constantly pushing out toxins, oil, and bacteria even at night so washing in the morning is really important. I for instance have oily skin and so in the morning, my face is super oily and slick. I have to wash it, lol. Even with dry skin, I think its really important to wash. If your skin is getting too dried out, try another product, a gentler one that's oil based and/or formulated for dry skin. Toning and moisturizing are super important too. That will keep your skin from drying out as well. Oh yah and soap in general is super drying. I'd try to stay away from it, lol.
Hope that helps!
Leah