The other thing to consider is the tense. The tense of your example is awkward. Consider
I’m sticking with my plan. It seems to be working. (This is a common usage, talking about your current ongoing activity)
I’m sticking with my plan of studying English every day.
I’m sticking with studying English every day. (Colloquial)
He’ll never stick to his New Year’s resolution. It was too ambitious.
She stuck with him too long. She should have dumped him after his first affair.
When I get a plan, I stick with it.
Stick with the girl who loves you. (Not talking about current ongoing activities)