I am sorry to hear about all of your health problems. People with strep throat, allergies, and the use of antibiotics all point to a candida overgrowth problem. That is why you are feeling so ill right now and for so long. You haven’t addressed the cause of the health problems…but just the symptoms.
The diet you are doing sounds perfect more or less; I would only consider the supplements you should buy at the store. This will really be half the battle in getting better.
If you can make homemade kefir; this could save you a lot of money or purchasing probiotics (which are expensive). You can purchase a kefir starting kit and just add goat or cow’s milk plus some sugar, and it will grow over and over continuously forever. Antibiotics stand for against life while probiotics stand for pro life. This will be one of the most important things you will need for your recovery. Add this in about 2 weeks into the diet.
We can get into other’s in time, but for now just focus on getting better and taking life a day at a time. Get plenty of rest and drink plenty of water. There is a lot of information out there, but you have found a good place to start and for good information.