I don't know how your practice plan is set up, but if I had a SR who isn't a great student to begin, was capped in ATH/SPD/BH/P/ST/DU, scored 24+ ppg and came in with a 1.9 at midterms he probably would have gotten at least 20 min. SH, I definitely think you were playing with fire only going to 11.
What level was the inel. FR at? It isn't too surprising that ineligibles get very high GPAs at DI or DII, where they are getting 90 minutes SH during the season they have to sit out.