For the tasks that you struggle with, rest then gradually increase the exposure to those triggers. Do just enough activity to cause mild discomfort, but not to much to cause a setback. Rest for a few days to recover, then do a little more. Gradually increase your activity level each week.

There may be some underlying conditions that are triggering your symptoms. It could be one of these 5 things:

1. Blood Flow
2. Inflammation and hormone dysregulation
3. Visual and/or vestibular dysfunction
4. Neck dysfunction
5. Psychological

So you have to check and treat all the possible causes. You mentioned vestibular deficiencies so continue that treatment.

A neck injury can be caused with a low G force event and the symptoms overlap with concussion symptoms so get your neck checked out.

Inflammation could be cause by a poor diet, leaky gut, or microbiome imbalances. I think you mentioned some gut health issues, so continue promoting a healthy microbiome.

Eat an anti-inflammatory diet. Cut out sugar, processed foods, fried foods, and seed oils. Eat lots of healthy fats, fish, protein and veggies.

Exercise is good for blood flow and circulation, so do light - moderate aerobic exercise.

Practice good sleep hygiene so you get rejuvenated at night.