techniques that my speech therapist gave me works during tasks but not when talking to people, why do u think can happen that?

techniques that my speech therapist gave me works during tasks but not when talking to people, why do u think can happen that? Guys, do you have any idea why the techniques that my speech therapist gives me during the sessions when I do tasks work up to a point, but outside with other people, when I talk with those techniques that the speech therapist gave me, they don't have any kind of effect even with other people not even with the speech therapist when I talk in a free conversation, except when we do tasks, for example, to create a sentence and say it then it works most of the time, do you have any opinion or advice about this anything to say would help