Getting a second opinion and an end date.

Have started wearing the 22nd pair of aligners of 38. Been upbeat and diligent w/wearing 22 hrs., kept all appts. Dentist wants to take an impression for new aligner. He didn't have an end date when I asked. Realizing there will be time added (38 +) with/new impression and that there might be more "refinements," has really hit me hard. Realizing this could go on and on w/no end date I'm ready to stop now. My teeth weren't that bad. Can I get a second opinion at this point in the aligner process?

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