There are enough people becoming b12 deficient on a diet that actually contains b12. Take a b12 supplement. Don't risk it. Fortified products are not enough. Deficiency can take years to develop.

Personally I take a vegan supplement that contains b12, iron, d3 and zink. I also eat algae oil for the omega3.

I also make sure to use fortified soy milk.

I have personally found zink to be the hardest nutrient to get enough of, at least since I got kids and started cooking more kid-friendly food.

I never had issues before starting to supplement iron despite giving blood, so I don't think it is a problematic nutrient for me. Every day I eat more than twice the RDI, but of course non-heme and together with the regular absorption inhibitors.