Where do I/can I go from here

About a year ago, I was on the verge of losing my driving job (regular 4 wheeler) when I came up with the decision to become a full fledged trucker, so I rolled the dice, took out two loans (a student one, and a personal one to cover my living expenses), and went to what I thought was one of the better Commercial driving schools in the province. Two months later I had obtained my class 1 CDL and was actively looking for an entry level driving position, which of course turned out to be a lot harder to find than I thought. Months went by with absolutely no luck in even a face to face interview until a month ago when I found a company willing to hire new drivers like me, provided I pass a driving test for them, (you can probably see where this is heading).

I got to the interview and blew them away with my professionalism and eagerness to learn, but when I got to the road test things went downhill (excuse the pun). In the six months since I last went behind the wheel, I forgot EVERYTHING. I didn't cause an accident of course, but there were a couple of times in which I stalled the truck on an uphill slope and I was so nervous I neglected to check my mirrors more often than I should. I could still shift but in some cases the shift box sounded more like a metal grinder. Thankfully, I still remembered how to hook/unhook a trailer and that I could still back up.

Anyways, sorry for the rambling. Im just stumped as to what I should do now, should I keep plugging away at the companies, or maybe look into retraining? Or is there another option that I haven't looked at yet that might be possible?

P.S. Mods, if there are a million other threads like this one, feel free to delete it or refer me to a similar thread.