Is your mother on any medication for her Sjögren’s syndrome? I take Pilocarpine, and it does seem to provide me with more saliva. Also, I have added more water to my daily routine. It is hard to learn to drink more water as we get older.

Perhaps you could find ways of adding fluids to her diet? A pretty water bottle at her side table, or a glass of water at her dinner table might help. Helping her to understand about the connection between regular urination and bladder health would be of help. She may be withholding fluids to keep her from having to go to the bathroom frequently, which actually makes the bladder more irritated. A visit to a PT who specializes in bladder health might help her understand that these things are all connected. Does she worry about walking to the bathroom?

Those are two suggestions I hope you will consider for her.