Tommac
I am ambidextrous, I don't know which hand to play with LOL! My right hand is better for dexterity and my left for strength. I remember when I went from playing organ to playing piano I had a tough time getting my left hand to do what my right hand could do, instead of just playing chords.
It will take some time to build up speed and flow, with your music. Don't get discouraged. Repetition is the key to building up muscle memory. Play it as much as you can stand and then play it 100 more times. You will get it in time. This isn't something you pick up in an afternoon. Good for you for learning something new for your retirement hobby. Learning any musical instrument, keeps your mind sharp!
Most of all enjoy it, no matter what level you're at!
Rick D.