I'm quite a bit older and started off a little heavier than you and Tirz has been AMAZING for me so far! I', 6'2" - 55yrs old and started at 386. I started on May 7th with .25 Triz and just moved to .50. I've lost 26lbs in only 5 weeks.
I haven't worked out one time and I sit at a desk working from home all day. I changed my diet drastically and it was extremely easy to do, I just don't crave the fried stuff anymore and I don't have snacks or ANY bad food in the house.
I only eat salads, raw veggies, tomatoe basil soup, mushroom bone broth soup, split pea soup, fresh fruit smoothies with almond milk, or fresh fruits, and almost no meat. I've had a small piece of meat on Sunday's a couple weeks--2-3 small turkey meatballs and a couple strips of skinless chicken breast. Otherwise, I've only eaten what was previously stated and unsalted nuts, protein/high fiber bars.
I added B12 2000mcg in the morning, 225mg of Magnesium Malate in the evening to sleep better, 20g of Collagen protein at lunch for joint and skin care, Casein in the early evening to slowly release protein as I rest and sleep. Whey protein will be added when I start working out as a pre-workout. I will start resistance training soon so I don't have tons of loose skin after the weight is gone. Goal is 215lbs.