Under the table "Stages of behavioral change", this is listed as one of the interviewing techniques for the contemplation stage.
Not sure if this is worth having a new card since only 29% of students taking AMBOSS Self-Assessment 2024 got a question about this topic correct (Block 4 Q24 - question talked about motivational interviewing and gave a readiness score of 4, then asked what question you should ask next, correct answer was "Why didn't you pick a lower number?" Most commonly picked answer was "What things would be easy for you to change" which is not appropriate for Contemplation stage, but rather the Preparation stage.)
Also added AMBOSS Self Assessment tag.
Source: AMBOSS - https://next.amboss.com/us/article/3K0STS#Y6b324469eb1ce64bdedd7674a3cc01a0
Image update since suggestion, would need a less specific example