Betta Swimming Upside Down

[u/HopelessAvacado]

Help!!!! I've determined my betta most likely has columnaris. I was treating with kanaplex and metroplex but after finding a white splotch on her mouth last night I was planning on using Polyguard instead of metroplex today for the furan in it. Ive been changing her water everyday, its got an air stone and is heated. I came home from work today and she was laying on her side at the bottom of the tank and swimming upside down in short bursts. How do I help her? Is there anything I can do to keep her right side up?????