Hello lascar.
I would be curious how long you have been practicing asana, whether you are practicing more than asana, and what style or styles shape that practice. However the more important question is what intention you have for your practice.
If your intention is the release of fascia in the physical body then there would be one answer. On the other hand if your intention were to do as many sloppy poses in 90 minutes as humanely possible, another answer.
If you are a beginning student then I would likely not be telling you to listen to your body or your inner voice or your instinct or intuition unless you had already cultivated such skills. To direct a neophyte to employ a skill that is not yet cultivated merely fosters frustration and can lead the student down a risky path. Of course an intermediate student could be given such direction AND be able to use it. So if you’ve cultivated that level of awareness, yes please do use it.
What is often missed in the contemporary practice (of asana, since that is the topic and not Yoga) is that it should have a purpose, a “why” or reason - thus the mention of intention. When I sequences a class I have a place I want to direct it and each thing that is done, the duration of that doing, and each thing that is said is carefully chosen (when I am centered, grounded, and focused as I should be) to contribute to that direction.
There is one other component I want to mention. While it is honoring to exit a pose when the voice within you tells you it is time, we must also be working to ensure that is a clean voice - a voice not of the vital or mental force but one of the heart. There is also a tremendous amount of personal growth available to us in posture when we are able to stay one half breath longer than we thought, one minute longer than we thought. It is this process that stretches the sutures of the skull, breaks up samskara, and leads us out of an existence of mediocrity.