Does anyone else have significant light headed spells when they stand up? My blood pressure drops when I stand and it's very disconcerting. I talked to my office but they were stumped. It's worse when I take a bath but that's expected in hot water.

There is often a significant difference between lying, sitting, standing. You may need to go for tilt table tests.

I had a few days of dizziness and read on here it could be lack of protein or beginnings of dehydration. I definitely wasn’t getting 64 ounces so I tried harder to git that goal and even the next day the dizziness was almost gone. Two days and completely gone.

orthostatic hypotension. An easy habit is to do some ankle motions or leg kicks, tighten muscles or use your arms to push up from the chair you are sitting on. Anything that will increase your heart rate and blood pressure so that when you do go to stand up it may drop but not as low and thus hopefully you will not have symptoms of dizziness. If you are getting out of bed, sit on the edge of the bed for 30 seconds, do leg/arm motions as well.

I agree that the likely culprit is beginning stages of dehydration. This was happening to me until I significantly upped my water intake. How much water are you getting per day?

Bariatric Pal Jazzy125 says there are vertigo exrrcises on Goggle, maybe you could try those also.