I understand your fear. I have the same for a different reason.
At -4.3 and 8 compression fractures, my spine will not withstand a fall. Every doctor who has seen me has warned me against falls.
Fortunately, although I have experienced some lightheadedness, it has not been a big issue.
Still, that is why I have decided not to try another click until all side effects subside.
I take my precautions and am very aware of my situation. I will not risk a fall, but cannot risk more fractures.
Even if it means going veeeery slowly up to the therapeutic dose, as long as I physically can, I will stick to my treatment.