Hi welcome to Health care magic forum.
Thanks for calling H.C.M.Forum.
As you describe you are a 70 years female, suffering with rheumatoid arthritis
, and sjorgens disease. you want the things which can help the disease.
I advise you to avoid potato, other tubers, tomato, cauliflower, egg, chicken, fish, and seafood , to avoid muscular and joint pains
Avoid taking spices, junk foods, and oily foods to be comfirtable in sjorgans .
You can use artificial saliva and tears for eyes can help you .Take more of water and juices.Take more of bland foods.
Wishing for a comfirtable maintenance of life.