Besides all the good tips here, you might want to reconsider that assumption 
Your dominant hand should do the the boss of the rhythm.
Your issue isn’t uncommon to people using the non-dominant hand.
You could be righthanded to write but lefthanded for guitar.
Or ambidextrous for some basic stuff like the reflex of grabbing a glass of water.
We have seen various mixed cases here (myself included) so why not go for a test?
Check this thread, we talk about it there
hit a pot with a spoon in a steady rhythm with your left hand and then with your right hand. what felt best?
Sit down and tap your left leg with your left hand and your right leg with your right hand. count 1-2-3-4 and alternate hand so the “1” is left, the 2 is right, the 3 is leftand the 4 is right. keep counting 1-2-3-4-1-2-3-4 etc. What feel like you are in control the most?
Image a ball coming at you
it coming at you real fat!
imagine punching it away an make the movement.
Which hand did you use?
grab a salt or pepper shaker. shake a rhythm.
Count out loud when you do this
1 and a 2 and a 3 and a 4 and a 1 and a 2 …
What hand did you use?