Advice Needed on Getting a Medical Card

19, chronic illness, long documented history. My primary says he’d be happy to write the script but he and none of the providers in my practice are able to.
He told me to go to

https://www.nj.gov/cannabis/medicinalcannabis/find-provider/

To find a provider but it’s been weird experience so far. I mean I’ve only called just a few practices so far but 1 said they didn’t know the doctor from the website and another said they have to wait for a specific admin to schedule. So kinda weird.

I would like to try this for pain management and I need the card because I’m not legal to buy it yet.
I have no clue how any of this works, totally new to it and my PCP is too so advice is needed and appreciated.