
Only you know for sure.
You have to be your own watchdog and find the discipline to make yourself practice. Don't rely on others to prompt you to practice your instrument.
Remember, there are all kinds of practice - new material, conditioning, exercises for speed and dexterity, sight reading, transposing, listening, creating new music and/or sounds. So, don't think you only have to practice your lesson from the week before. Of course, you should keep on the path you and your teacher have chosen, as everything new builds on something old.
Even Keith Richard from the Rolling Stones admitted that he is "about half way there" when asked how he thought of himself as a guitar player. There is always something you can do to learn more about your instrument. Even the most successful, influential and talented artists strive to be better. So should we all.


