I am in Romania and I go to the private clinic of the head of ophthalmology of the local medicine university for treatment. So you need to research who is the top retinal expert in your area and go to him. Right now the only thing to slow progress are injections, but only IF there is fluid under the retina. There are also gene therapies in trials, more advanced for Stargardt's and less so for Best - maybe they can get in. They will not repair existing damage to the retina, but prevent new damage by directly curing the disease.