I don't think the amount of times you wash your face will have any effect on your breakouts, while on accutane, your breakouts will happen whether you wash your face or not, arguably if the spots are there they will come out. I make sure I wash my face once with a mild cleanser usually in the morning, but not really at night. Your skin is going to be ultra sensitive at the moment so i guess your derm doesn't want you to over aggravate your skin by washing when its probably not needed. Try once a day for a week and see how it goes.
Good luck.
A.

@AndreaRthank you for the reply. I haven't washed since last night. After I washed last night, I did aloe vera and then moisturizer over. It is less red today but still red, and patchy skin. My skin does not look good, but there is not a single pimple or anything. Do you suggest no washing my face again tonight? or should I wash and then do the same routine... Also any thoughts on moisturizer, vs aloe vs aqaphor and which would be the most hydrating. Thank you

I would try a 1 time of day whenever is most convenient to you and see how that goes. Your face will be red and patchy thats all part of the process of the medication but its great its clear. Im using avene skin recovery cream its a french brand but available here in in the uk in major drugstores, essentially as long as its moisturising, non comedogenic and feels good for you, you can try anything. Ive been trying a cream from the bioderma range anti redness one and its been good and overall less red, but by the end of the day even my skin begins to show its true flakiness - by which point i'm at home and don't really care who sees me then so i don't really reapply. x