Hi Erik,
I know exactly how you feel. I've been of work for a year with PCS from a concussion at work. I still have a lot of the symptoms you have and my advice would be if you could,move in with your parents until your symptoms improve.
The frustrating medical advice I continued to receive throughout the months were "rest your mind and ease back into your schedule". Ideally that means no physical activity or visual stimuli. Well,that's impossible unless you're put in a medically induced coma so even now I try,and yes I fail at times, to take it slow when my mind tells me to pull back and rest.
This is why staying at your parents will help you immensely,baby steps Erik.Everyones recovery is different. It sounds like your head injury was similar to mine,no skull fracture so to many it may seem like a minor injury but any time the brain moves inside the skull it is being stretched from the brain stem and there lies the hidden damage.
You will get better but your brain is going to heal itself on it's own schedule so just try to hang in there and lean on your friends and family
You'll get there