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Xylocaine Jelly is a local anaesthetic - I cannot really see how this is going to help you. I am not sure of a benefit to stretching to a point which would be painful, and for which you would therefore need the anaesthetic. Certainly, some medical procedures involve stretching under anaesthetic, but we are not recommending them, and I would not myself recommend that you do such a thing yourself.
On the other hand, merely pulling the foreskin back does not seem a particularly effective method on its own (whether or not you are using the local anaesthetic).
My understanding of the dosing schedule of fluconazole is 150 mg weekly. Every three days is I presume, OK (I don't think it is harmful), but I would think more often than necessary.
I don't recall whether you were actually diabetic in the first place, but control of diabetes is
absolutely critical in the control of Candida or other fungal infections.