Twice a day... ehh, I wouldn't worry about it. That doesn't sound like it's often enough to interfere with your communication.
If you're doing a prepared speech, though, here's something I learned from my piano teacher (hear me out here; it applies to talking, too): If you play fast, and you keep making the same mistake, then you'll just learn how to make that mistake. If you slow down so that you don't make that mistake, then you learn how to play it right. You can always speed up later.
When you practice talking, start out slow. Sometimes, in practical use, you won't be able to help talking fast, because talking slowly won't be an option in some situations--you won't be able to say things before you forget what you wanted to say, or other people won't know you were intending to talk and start talking themselves. However--if you want to practice, it's better to start out slowly enough to avoid making the mistake, and then to speed up later.
I think most people mess up on talking at least once or twice a day, even neurotypicals. But if this is something you really care about--especially if you're into acting or public speaking--then by all means, practice.