Stopping Infliximab and Methotrexate

Hi I have had UC for about 15 years Im 43 years old now. 13 years on Asacol then Methotrexate tablets then Methotrexate sub cut injections. Repetitive flare ups over this time with 3 month prednisone courses or hospital admission resolving the flares. Bones now have mild osteoporosis and have had 2 x fractures as a result. Last 2 years on Infliximab and methotrexate and been in perfect health. Over the last 2 years I have seen a functional doctor and found my gut bacteria to be very poor. I have been on supplements and a restricted diet last 2 years. No gluten, dairy, minimal sugar and a basic meat and veg diet. No alcohol for the last 10 years.

My public specialists say they don't know what causes UC and all they can do is medicate me to stop my symptoms. My private functional doctor says If we can remove the cause of autoimmunity and restore my gut flora I should be able to stop my medication. We are thinking the cause is gluten related.

Has anyone had any success getting off Infliximab or methotrexate long term post diet and gut restoration changes?