I was on such a diet for many years and eventually gave up on it because I could not make it work in a healthy way.
Why?
Too many deficiencies. Example: Linseed oil /= DHA/EPA. Many or most people cannot make long chain Omega 3 fats in the quantity needed from vegetable "Omega 3" fats.
Too many anti-nutrients in plants.
Get on youtube and search "I used to be a vegan" for numerous cases like mine, health irreparably damaged.