Maybe visit a nutritionist several times and create your eating schedule and grocery lists. It might be really helpful in determining what your body really needs and what you have to eat to maintain its health. You can also check the FCN-SHOP out. They’ve got some cool nutrition options for people with different needs. The portions are already well balanced, and you will not have to bother with that. You can choose different options, including weight loss, stress relief, and muscle building. Each option includes the microelements your body needs the most.

Thanks for all of your advice here. I also want to become at least a vegetarian and need to do some planning before starting

My journey is that I’m intolerant to eggs and dairy and advised not to eat pork and processed meat due to cancer in family history.
Avoiding those I’m vegan but ensure I get protein through nuts, seeds and iron.
If my nails look pale the iron supplements come out.
Also I use vinegar and avoid tea and tannins on the whole.
Mushrooms are my friends, I eat whenever they’re around.
Like a Buddhist, I will eat leftovers rather than wasting them though. Sometimes I really crave steak, maybe twice a year, and next time intend to be kind to myself.

Make sure you get folic acid from somewhere...

When I and my former partner became vegetarian we went slowly. First got rid of red meat and over about a year removed the rest. One has to have substitutes and it takes a while. However, in today's world there are tons of replacement foods from plant based milks, cheeses and of course meat. One thing I like is called Tempeh, which is said to be one of the world's oldest processed foods. One thing about Tempeh most is made from soybean sprouts but there are other kinds from other sprouting vegetables. TVP is another great item. It makes a great Sloppy Joe's.