Trying Gluten Free Diet again

We began GF diet when we returned from Spain. It's been a couple weeks and not sure I've seen a clear difference but going to give it at least 6 months. People say it takes that long for gluten to get out of the system. Want to try this before we look further into the Fecal Transplant.

He is currently on:

2 Life Advantage Physio Probiotic balls (started this a couple months ago instead of other probiotic)

1 Carlson Elite Omega 3 Fish Oil capsule (we've been on this one for years)

1 Pure Encapsulations Calcium Magnesium (we began this a few months ago)

1 drop of Heritage Store Atomidine (Mon-Wed only) started this again a couple weeks ago but had been on for years with Dr. Hedayat)

6 drops Vitamin D/K3 (have been on this for years with Dr. H)

I give him this in a special yogurt thickness mix of Yam, Coconut Oil (will switch back to Coconut Cream when I can get some more) and a bit of Kombucha to thin it out a bit.

I know we should go Casein free as well but one at a time. Also trying to add more root veggies, like sweet potatoes and beets, as well as trying to work out how to get him his greens again. He used to eat salad and smoothies with more greens.