All of the options you listed are good, imo. I would start with the renewed focus on studying (I need this too!!) and keep playing when you feel better. Keep an open mind about coaching. I'm considering the coaching angle, too. I think it makes a ton of sense. Vids are good, but somewhat inefficient imo as they often wander through a wasteland of hands and info to get to the 2 or 3 key points that make them worthwhile. I don't have a ton of time, so studying and reviewing my game seems to pay off faster in terms of improving. I think coaching would also be efficient.

As always, good luck with the grind and life and feel better soon.