From my own personal experience having had candida so bad I couldnt think straight, the one thing that felt changed everything was getting my hands on the Lower Bowel Balance Formulae. This LBB got my bowel purging impressive amounts of debris and accumulated waste from heaven only knows where. Thus purging lasted for several months. Within two weeks I was seeing huge reductions in the direct candida symptoms. I transition onto a fruit juice fast within 20 days, completed a 10 day juice fast using citrus fruit. The secret lay in getting the accumulated and backed up waste to move that was creating a super feeding ground for the fungus. Once the waste was moving down and out as it should do (Most folk have their bowel and liver choked up resulting in their lymph backing their waste UP into the system playing havoc on everything, resulting in a myriad of seemingly unrelated symptoms.) When this is reversed much of the system comes on line. A juice cleanse or diet at that stage further deepens the cleansing of accumulated waste, allowing the backlog down the the cellular level to be relieved.
From what you have been writing above seems that the stagnation and accumulation of toxins is complicating you making progress.
Very few so called health experts are teaching a foundation up approach. Many dealing with higher levels of the paradigm instead of dealing with the basics.
The basics are ..... Clean out the 5 Elimination organs. (you need the right tools to do this...AND NOT add to the toxic load of an already over burdened system. A herbal approach trumps all others to get this done) Clean out the possibility of parasite/worm activity Nourish the body with food it was anatomically designed to consume.
Additionally.... Makes sense to do the following. Stop eating the foods that make the situation worse ie Processed Foods, Chemicals, Junk Food, Pop, Grains Products (Grains are not a human food) of any shape or form, and lastly Dairy.
As your body heals, and this will happen quickly if you give it the right environment to heal, you will be able to expand your realm of diet and be more tolerant to a wider ranger of "foods". But thats later when you are back on track.
Lastly when the waste is moving down and out, ie elimination organs are online and doing their thing....doing a series of small fasts 3-7 days, (building confidence in the fasting process)and then possibly a 10 days juice fast will see the body being empowered to heal just about any condition. The LBB is key to succesful fasting. Makes for a very easy cleanse.