I'm on both Betahistine and Stemetil for Meniere's iennyjoan.
Hope you get an answer soon dawny, balance issues aren't nice.
I found some grounding techniques I learnt at meditation quite useful to try and get through less serious episodes of being off balance, not so useful for more severe ones though.
Little things, like focussing on the end of your nose, breathing exercises, putting your feet flat on the ground when sitting, not moving your head around too much or too quickly etc... More trying to calm the environment around you to make it less distressing.
I have walking sticks and a walker as I have mobility issues but they do help with balance too could be an idea, or other suitable mobility aids like a frame or roller walker with a chair to help.