I would say you've been awarded MRC!
My son is similar, he was awarded MRC, he's also up during the night, he's on melatonin for sleep related issues and has epilepsy which is mostly nocturnal seizures.
I was told MRC is appropriate for this type of situation. I think HRC is usually for someone that's literally awake every hour of every night with their child, as well as enhanced care needs during the day time x