Tai Chi walking?

Just a simple question, not looking for dietary or caloric suggestions. But those who do Tai Chi walking does it actually work for weightloss? Unfortunately, i've been struggling with a weight issue due to an excess of cortisol and eating disorder (stress is a wonderful thing). I also don't eat enough to lose weight and despite being being plus size, I don't even like snacking even though I would love to have that cookie or cupcake my daughter would bake for her Home Ec class assignment. This stems from unresolved traumas from my childhood and early teens years when family members would deny me a decent meal by fat shaming while extremely underweight.

Anyway....My current exercise regime is walking 3 hours daily which is mostly on a hilly terrains (weather permitting, though I have been stubborn enough to walk in the middle of a Nor'Easter), treadmill and a stationary bike. But I need something to switch it up and a friend had suggested Tai Chi walking, but with all the hypes of various exercises i'm a little sceptical.