I think it really depends on the person. I've read posts on here that sleeplessness will subside after a few weeks... I've been taking phen for 7 and I still can't sleep! I've just changed my patterns up... I don't take phen on the weekend because my body is exhausted. During the week, I only get a few hours a night. I do hope this goes away quickly for you, seems like it does for many! Best of luck to you!
