Probiotic,
I would suggest you call Skip's Pharmacy and ask them how does the script have to be written exactly for the transdermal LDN?
I think Gonk's idea of stopping the LDN for a bit is a good one, however I believe week is too much, IMO 5 days would be a better hiatus. I've read a few anecdotal stories about people doing that to re-start the LDN effects with great success. What I've been doing is every couple of weeks, I'll skip 2 nightly doses in a row, and then re-start again.
With regard to trying slippery elm powder, IMO it's worth a shot.
I tried boswellia and had no success with it. Be careful with Lecithin, I've read that it can goes great gastro-intestinal distress.
I know that ItsAlwaysSomething tried the homemade version of slippery elm powder enemas, which helped her alot.