SPUSCG,
The problem is simply not practising with the so-called weak hand.
While ago I gave up having a weak hand. Yes I'm right handed but I can shoot left handed also.
How?
I simply got a .22 and started shooting left hand. Slow fire first.
Then I got a couple of dummy guns, all metal, that match my Glock 26 and J .38. I then started drawing and going through the same motions I do with my right side. Even got left handed holsters and mag pouches.
Did everything I'd do with the right side. Two handed shooting, one handed, hip shooting, draws from under t-shirt, etc...
At first it was awkward, but later I got used to using the left as well as the right.
I'm still a bit faster with my right side, but I'm more accurate slow fire with the left side now.
But I can go to any IDPA match and not look bad at all left handed.
Deaf