New here...starting high protein diet

Hi all! My name is Debbie and I live in TN.
I'm new to myfitnesspal.
I'm doing a diet through a hospital medical weight loss clinic. I just started last weekend. It's difficult going to 1600 calories from tons of calories. But, I'm determined to do this. I want to lose some weight before I go to Hawaii in August.
Anyone out there on high protein diet?
My doctor is thinking about putting me on Qsymia. Has anyone out there tried it before?