Hi spook street, i use a hyaluronic supplement as this encourages cells to hold 1000x more water therefore plumping the skin. I use it for maintaining my skin and joints as opposed to VA / burning symptoms.
Personally although HA may help slightly I doubt it would alleviate your symptoms entirely. You could consider D mannose supplements to help bladder and maybe bio curcumin which is a powerful anti inflammatory.
Although i take low / medium dose systematic hrt, I still use yes water based lubricant as required.
Sorry i cant be of more help.
Linsey x