I Started Adderall On 10 Mg A Morning 10mg At

i started adderall on 10 mg a morning 10mg at noon (20mg a day) and then within a month moved up to 40mg and for the first month it was fine, the adjustment to sleeping wasn’t too extreme but within the last week before my refill time i ran out and so i think it weakened my tolerance to adderall and the past four nights i’ve had typically around 2-4 hours of sleep each night and like i know that my body will inevitably adjust but is this specific amount of sleep loss in the first week not very alarming or should this be an extreme concern? - now noticing my skin being a little darker than natural color