Help my daughter taking three kinds of meds. Keppra, oxcarbazepine and depakote all generic.

Need advice and any opinion,depakote start tonight, 125mg 2 capsule am and pm,total 500mg per/day.Question, is this to high dose for a 30kg kid? New doctor,I'm very nervous what's the outcome,still can not stop seizure  on and off every two weeks. I feel like we are poisoning  her with all this neuro, wants to stop oxcarbazepine it takes 5 weeks. Leveteracitam still in high dose 17ml pm and 10ml am. I'm so worried right now. Any advice very appreciated.