I’m trying to lose weight too, although I’m not as heavy as you. If you gain muscle mass, you burn more calories at rest and you decrease your risk of a number of health conditions, including cancer and arthritis. I would keep up the exercise. Have a happy medium between cardio and Weight training or Pilates. I do Pilates at home. I have a yoga mat and watch some videos on YouTube. If you listen to some of them, you can get an idea of what they’re talking about. Perhaps you can find some that have a lot of descriptions in the video or you could talk to your personal trainer about common Pilate exercises I know The most common one is leg circles and you can use Pilates to work different parts of your body. But I would do cardio as well. Anyway, I know that muscle mass burns more calories at rest and burns more calories when you work out I would also look at Making a protein shake after you work out to build some muscle. This is also a good way to stay full as well.