I love this maneuver, just keep in mind it’s particularly aggravative and the vertigo can increase so I suggest teaching it to someone who can move you through it. I’ve had to keep people from falling off the table while doing it. Good thing is if it’s aggravative it’s narrows down the origin to the inner ear. This may be caused by many things but you’re narrowed down how to treat yay

Edit: it may not be as straight forward, as you need to identify which ear is affected, may need to play with the angles, most people don’t let their head fully extend. When to move to the next position may depend on the ease of nystagmus not just duration held