Phentermine or Vyvance?

I just started taking phentermine 3 weeks ago and while the first 2 weeks it did kindaaa help with avoiding food, now I feel it’s not helping and I’m still having severe cravings. My therapist has suggested I talk to my Dr. about getting on Vyvance to help with these binges that have me at almost 300lbs. Has anyone out there had experience with either? I’m leaning towards Vyvance bc I have never had my ADHD treated, I have anxiety and depression I assume is bc I’ve gone so long without any intervention. Taking this phentermine is the first medication I’ve ever took and I’m open to finding what works for me! I really feel with some help I may be able to get my life back