Very disoriented / sleepy when i'm looking at ipad for over 10 minutes and it's especially bad when taking notes and switching my focus from a near to far object. got diagnosis of mild convergence insufficiency; do symptoms match? no vision issues?

Highly likely that you do have visual issues, and to address this, it is best to enlist a neuro-ophthalmologist, and an optometrist with experience in compensating for non-synchronous visual challenges. It is possible that a reading eyeglass with progressive lenses and perhaps prisms, may solve most of your problems, but get this fully assessed first.