Were those 3 months of being cognitive symptom free during summer break and now you have returned to school and an intense study load?

If I remember, you said something about studying to class.

If you were doing nothing to trigger any symptoms and not taking on cognitively intense activities, it would make sense that you did not notice any cognitive struggles. That does not mean you were recovered. It sounds like you were 100% cognitively functioning doing almost nothing.

The recommended recovery protocol is to stay mentally active but in low intensity activities. Avoiding all stimulation tends to prolong recovery.

By self-medicating, I mean some people who have high stress levels and live intense lives use intense sports and activities to trigger adrenaline and other chemistries that result in a release of tension after the activity. Runners call it a runner's high.