I had cdiff for 5 months last year. Antibiotics from having double pneumonia. I was on vancomyin for 8 weeks, than difocid and finally VOWST, the poop pill. You must 2 weeks after you finish the vanco get another stool speciman to make sure you are negative. It is very weakening. After its all over, it could leave you with IBS, however for this I was given imipramine a trycyclic drug used for depression which now is used for ibs.
Just dont push it, rest, I dont know of any dietary info, your gastro doctor maybe able to give you that. I do hope you are better soon.There is a great doctor who is an expert on CDIff. I dont know if you live in NYC. He also has videos on you tube. His name is Dr. Ari Grinspan. feel better soon.