How do I make sure morning glory plant prevent not to produce?

Pull the weed. If it grows back pull it again. It will eventually run out of energy and quit coming back. Persistence is the key.

Take of dead flowers before they seed..........Weed killer ........

Morning glories self seed and can come up even years later. You can continually pour boiling water or vinegar on it.

I just keep pulling those darn shoots out of the ground which seems to help. If they get to seed, I've clipped the seed pods off before they drop. It's a pain for sure.

you will have to continue to pull them out

Thank you for your suggestions. I will try them.😊