medical condition

So I have POTS or postoral orthostatic takacardia syndrome which basical.y means that I can’t stand to stand up. My blood pressure keeps running low. This morning it was 80/45. Also, I was told to drink 3 to four liters of water a day and to take in more salt. I’m getting tired of eating pickles though lol. So I’ve been worrying about that for the last three days.