Rely on how you are feeling, not what some doctor tries to project on you. Get back into moderated tasks. No long intense projects.

My biggest concern for you is your neck and whiplash. Those falls put a strain on C-1 and C-2. Icing and sleeping will a straight head and neck posture is best. Avoid any head forward pillow positions.

You should not be sleeping during the day. That is well understood concussion recovery. It disrupts the sleep clock. Get back to a normal sleep schedule. It is your most important self treatment. An occasional short 5 to 10 minute daytime nap is OK but nothing more.

Try new activities in short stints to see if they trigger symptoms. Listen to your body/brain.