@nathansmith7143
If I were you or if you were my son, this is what I would do:

1. Get a MRI of my cervical spine by an orthopedic spine specialist to check for compression/flattening of spinal cord/nerve roots/nerves and blood vessels.
2. Get updated MRI of my brain (new neurologist) to check brain matter changes and vascular structures. It may be good to do a functional MRI and EEG.
3. See cardiologist for bloodwork/EKG/ultrasound of carotid arteries/vasculature in neck. They may be able to do a tilt table test and ankle brachial index test.
4. See a psychologist for an assessment to check memory function and emotions for a baseline for where you are now.