It can definitely get better. What helped me the most was making sure I'm eating and drinking plenty. For drinks I aim to have half of them with a quality salt or an electrolyte mix. I take a medication for it too. Sometimes I wear compression stockings. When symptoms are worse, I take plenty of time to sit up or stand. I'm sure you know all the usual things to try. But just wanted to say, that yes, all these things combined really do help. Noone can say exactly how much it will help you, or how long your nervous system will take to heal. Part of the process is learning to trust your body that it's doing the best it can. Trust helps you stay calm, and calm helps your nervous system do its best to regulate everything. I guess the other things that help me are postural adaptations, like sitting with my feet up when I can, things like that. You'll be okay.