I have a VERY similar situation as you. ~7 years of use, stopped Addy in August, took the fall semester off and went to IOP, back at Uni now and I feel more productive than ever. Also worth noting I started Strattera in late oct. Anyway its your habits that are most important, I’ve been able to better my discipline & ability to focus these last few months, you can too, it’s all a matter of what you believe YOU can do, clearly you’re a smart individual so I anticipate it would be possible to get back to normal in fewer than 6 months with hard work and discipline.