sorry you are experiencing this
IMO, you need to find a regimen that works for you.
And perhaps the foods you are eating are creating more symptoms as well.
But it seems the meds aren't controlling your symptoms enough to allow you a regular and nutritious diet.
Is your doc aware of this?
I would suggest trying things which will change symptoms so that you can resume a normal diet by eating 3 + meals a day ( which your body requires). These things would include slippery elm powder, l-glutamine amino acid, diet modification as in gluten and dairy free, among others.
And if you are interested, there are things IMO that you can control, which will have a direct impact on
your disease, the symptoms you experience and their severity.
I was able to control my UC into remission through various
supplements, probiotics, diet modification, and LDN , low dose
For more info on the protocol which has put me into remission,
please go to this link: https://www.healingwell.com/community/default.aspx?f=38&m=1666318 , and look at the 11th post.
I hope you feel better and let us know how we can help