That's right i agree!! its not veganism, and it isn't even the transitioning period either especially because over the period of a year your body would already be used to the change.
Your body works harder to digest meat then what it doe to digest fruit and vegetables as fruit and veggie, so changing to veggies is simply easier and less work for your body, then what it is used to so its definitely not veganism.
With the transitioning, I know many vegans that transitioned over night from omnivore right to vegan and have never had a problem...some of them stayed the same while others even lost weight. You need protein foods, and less carbs and starchy food...
I disagree with the comment of Casper.s2 when he says eat plenty of potatoes... that is starchy food and large consumption of it can be just as bad as bread.
Alternatively he does have a great point about eating more fruit and veggies, try to have fruit for break fast (like he said) because having a light moist meal first thing kit starts your metabolism... i enjoy smooties!! (back in the day people had fruit for break fast and also some even would have a glass of water and squeeze a lemon in it - meant to be good for metabolism. And well they must have done something right because back in the 60's you didn't see many over weight people) I also agree with the oats theory very good for you. As do I agree that having to much soy can be bad and that your should definitely experiment with your options, but if i was you i would interchange them each week as all vegan milk options can be bad.
quinoa milk...? i personally have never heard of it, where can you get it from?
And keep away from GMO food in large quantities, very bad. (also again referencing to back in the day, before GMO there were less overweight people)
Also i was thinking, how is your sleeping pattern...? 8hr a day is what is recommended, seems weird that it would affect weight gain but funnily enough it does.