I'm sorry to hear about your motorcycle accident. I'm also a lefty who's been trying to play righthanded guitar and found it awful. Fortunately I only tried to play righthanded for about three weeks before I switched back to the 'right' choice for me.
My advice is just to take things slowly. Never try to do things faster than you can unless you get it 100% right. Otherwise you may try to do wrong things fast and you start to develop incorrect habits.
Hope that helps.
JJ