Would not recommend. As the other poster’s link mentioned, it is possible to cause negative symptoms, although you’re less likely to do this with water soluble vitamin C than it is with the fat soluble vitamins A,D,E,K.
In all likelihood you’re just making expensive urine.
Why not just find some tangy citric acid based candy that you like?
Well yes, the onus is on the healthcare provider to pick CME that’s relevant to them.