A Hi there, thank you for your question. Your results are pretty impressive and it is obvious that you combined your treatments with proper diet and exercise, which is the best course of action for optimal results.
To answer your question, there is no limit on the number of Vanquish ME treatments you can have. Treatments are recommended based on a proper physical assessment, and in your case it seems that you could benefit from the new Emsculpt treatment made by the same company (BTL Aesthetics). You can try it on its own or even in combination with Vanquish ME.
The Emsculpt emits electromagnetic waves to stimulate muscle growth and fat loss. The electromagnetic waves cause intense and prolonged muscle contractions beyond what you can do voluntarily. This results in muscle hypertrophy (Increase in muscle size) and hyperplasia (increase in muscle fibers numbers). Studies have shown, that a single session of 30 minutes on the Emsculpt is equivalent to 20,000 crunches.
And always remember adding resistance training, and proper high protein diet are essential for optimal and sustained results of muscle growth and fat loss, best of luck.