First off, I would not advise you to just stop prednisone without talking to your docotr, as there is a chance that your breathing may worsen.
Having said that, some of your symptoms likely are from the prednisone.
The white patches on your tongue sounds like thrush- a fungal infection that you are predisposed to because of the prednisone. You will need an antifungal medicine- either a pill called Diflucan, or a topical antifungal liquid like nystatin- Both should be received from your doctor.
As for your "bone pain"- it may indeed be from prednisone as well. IN fact sometimes prednisone can cause a very serious condition that affects the bones.
Or you pain could be from low vitamin D and so I do agree with you being on Vitamin D replacement to normalize your level- If your pain improves, you will know it may have been the vitamin D.
I would suggest seeing your doctor to discuss these issues.
Always ask if you need clarification/more information.
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