Is this a strong sedation for the artificial coma?

Assess this situation:

A patient wakes up from deep sedation with sufentanil (0.5 µg/kg), ketamine (2.5 mg/kg), and midazolam (90 mg). He opens his eyes, but hours later, he still doesn't fully respond to commands. Is this normal? Is this sedation strong? Could the recovery phase take longer?
The patient was sedated due to status epilepticus and the status is over, pat has been seizure-free for hours and is breathing normally