I posted this a couple of months ago:

My husband started oddly/unusually sweating during his first covid infection and then the sweating and other symptoms (painful cold sensations, brain fog, irritability, weepiness, weight loss) became personally and professionally debilitating after his second covid infection and vaccinations.
It’s been over 1.5 years now. He’s been seen by many specialists, had multiple tests and studies done, tried various medications and still no diagnosis.

Someone on here posted about the medication, Oxybutynin to help reduce sweating. This has been life changing for my husband! It doesn’t eliminate what we call “episodes” where he still feels many of the symptoms, but it has stopped the majority of the sweating. He’s taking 15mg extended release once daily and no longer changing clothes up to 4 times daily.

I highly recommend researching it and talking to your doctor to hopefully get some relief from the constant sweating.