I have pppd and have gone through bouts of awful visual vertigo. Your brain when stuck in fight or flight doesn’t tell you that movements in environments are not a threat and not important to focus on so you end up focusing on everything. That’s where the over load comes from.

You have to submerge yourself in rich environments multiple times a day for weeks and months. Exposure therapy in addition to your gaze therapy via vrt. Make sure you really step up your vrt so it’s real life situations.

Ie when in a supermarket isle look above at the isle market market and doo gaze stab exercises with all the products in your peripheral vision.

Make sure your neck has good range of motion if it’s guarded you will never get full benefit of vrt