That's why rudiments were invented. By practicing them constantly instead of play habbitualy, the brain pattern become ambidextrious.
If you look at any begginers books or drum lessons, it in fact always mentions to reverse the rudiment patterns.
For example: RR, LL vs LL, RR & LRR, RLL vs LL, RR & RLL, LRR and so on. Repetition of any pattern will get you stuck playin in only one way and that in itself becomes a habbit method of playing.
As a drumming coach I tell all of my students to practice the Moeller Technigue.
So rudiment patterns were made for lefties as well as for righties. It's all a matter of breaking old habbits.
Bike riding will help strengthen the weaker leg muscles by adding more effort into the weaker one.
Here is an example of a
Single Paradiddle lesson:
The same lesson can be adapted to a bass double peddal. But most important is to practice, practice, practice. Until it becomes second language.