I can relate to everything you're saying- the sensitivity to talking, listening, evening thinking. So this edvice comes from my own experience:

1. Hire a caregiver. The amount of care you need may be more than one family member can handle.
2. Get a hospital style bed so you can sit up at meal times. Have the caregiver serve you meals in bed.
3. If going to the bathroom aggravates your head, then use a bed pan.
4. Get sponge baths instead of a shower. You can use a waterless body wash. To wash your private areas, place an absorbant pad under you, wash with regular soap, then pour warm water to rinse. The pad will absorb quite a bit of water. Your hair can be washed in the same manner.
5. Get a wireless doorbell to use as a call bell.
6. If taking fish oil, then monitor your blood pressure because fish oil lowers bp which can cause other symptoms.
7. Ear plugs can cause earwax impactions. See my ealier post.

Your brain will heal if you give it a chance to heal. Eliminating trips to the bathroom and the kitchen will give your brain a better chance.

For an explanation on why you should adopt this approach, see my posts at the end of this thread:
Any theory, explanation or treatment for dizziness/vertigo/nausea?