Same problem here. Corner shower, 6'5 tall, head almost hits the top of the dome. Found this a few months ago and it really helped. I placed the suction as high as I could and the neck of this extends up and in to the dome where I can put my shower handle. Not "perfect" but is 90% better.
https://smile.amazon.com/gp/product/B07V2PNCRS/
Can't send an actual photo - our rig is in the shop.
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