that’s fantastic, Gábor! Congratulations. Make sure to celebrate every time you say something fluently, even if it is a simple “good morning”. I used to do that, and it helps.
One of the things that helps me the most is slowing down. I enjoy speaking a lot more when I slow down.
And don’t forget that using the Crutches is not a failure. It’s the exact opposite. It’s a huge success! Why? Because thanks to them you managed to avoid a bad incident and therefore speak fluently, and most likely in the past you would have stuttered in that same situation! So celebrate it!!