Timeline for waivers

Im reading conflicting things about how long you have to be off ADHD medication before I can enlist. Recently lost my job so I won’t be able to afford it anyway. I’m on a very low dose of adderall so realistically can be off by January. With a solid year of good academic performance would I be able to get a waiver, and what branch? I already have a bachelors degree, so I would be doing a one year Master’s while getting in shape.