Good homeopathy will cure so that the disease does not need to be controlled.

I did have a pair of kittens that suddenly went into epileptic fits. One had severe fits for several days that valium failed to control (this kitten endured permanent damage). The other was given bel after valium failed to control. The bel needed to be repeated in higher potency through out 2 days, until we reach 1M. This cured the fits entirely, but agrevated. The kitten went on to chew an inch off the end of his tail. When the effects finally wore off he was fine, until going under anestetic; after which bell 30 put him right again.

I do think you can find a remedy to cure; you said yourself that it has been going on for 6 months. Take the case in its entirety.