Talk with a psychologist. My mother, with Parkinson's and many falls, benefitted greatly from anti-anxiety medication. When she is less anxious, she is better able to focus on walking and implementing strategies she's learned in PT to maintain balance.
Best of luck. I know the amount of medication can seem overwhelming and hard to manage, but some things are really helpful and worth the risk. In our case, it helped my mom be more social and have overall better quality of life, in our opinion worth the risk - especially b/c close monitoring showed her balance improved and did not worsen with the medication.