How to get rid of swim bladder disease?

My goldfish has been floating up to the top of the tank for a little while. I treated by giving peas right away, and Babykins stop floating so rapidly to the top and stop flipping upside down when she reached the top. Now poor Babykins is still having some floating issues. She is slowly floating to the top, very slowly. I feel like she can't sleep because she can't relax. If she keeps floating and can't rest at the bottom of the tank, how can she sleep? Her water conditions are perfect from what I've checked. She is having some balancing problems. Checker, her tank mate, is fine with no swim bladder issues, though he is small with balancing issues as well. He is very happy all the same. Babykins seems happy too but I feel so terrible that she can't even relax. I do feed peas and only peas (I gave some flake foods earlier on in the day ((I know it's bad for them but they eat nothing else, they are picky. They do eat sinking pellets but that makes swim bladder worse)) so I haven't stuck to the pea diet very well). Now I am planning to stay to only peas for a days or so, and see what happens but I would love to know other ways to help poor Babykins. She is a fancy goldfish, and I do know they are prone to swim bladder problems. The salt bath is no option because I can't find aquarium salt and my mom will not take me to big al's for a long while. I already made her go two times in one day, she was really frustrated. So maybe one or two weeks until I will ever be able to go again. Please help tell me some home methods of getting rid of swim bladder problems. I NEED YOUR HELP! :) Thanks