I'm sorry to hear this.
Seizures are one of those funky things. I knew someone that had one out of nowhere at 17 and then many years later in their later 20s, they had become more frequent.
Holistic stuff, if it fully works, is a dream. That'd be amazing. Diet changes and certain herbs have been known to help people. For some, it's their world and does everything 100% for them. For others, the cause may be a bit deeper and holistic doesn't always work.
I'm a "natural way" type of nerd so it pains me to take Keppra each day. I don't react badly to Keppra and don't have the mood issues people tend to do. There are days where I might be more easily overwhelmed or anxious, but I can usually offset that better by a good night's sleep and a good diet.
I do add CBD oil in there on top of it for if I'm seriously feeling weird. Sometimes it helps, other times it doesn't. I've had some close calls with seizures, where the auras were so strong, I know I was starting to have one and chewed on an incredibly low THC, high CBD strain for a good 5 minutes and came out of it. I'd be tired, but more functional than if I had a benzo. I do have a benzodiazepine in case it gets to that point because it'd be better than being in the hospital here, and I'm thankful I haven't had to use it. Although, even if a seizure is coming on - I usually won't take it because I hate how it makes me feel. >_<
Many people don't know the cause of their seizures, but if a cause is found and it can be addressed then that can sometimes be great news because it means you may be able to get rid of seizures for good.
I hope things get better for you!