Switching to vegan diet means that you would not eat any animal food and it's products.
Your diet would include:
Fruits
Vegetables
Grains
Legumes
Nuts
Seeds.
Times in a day of meals to be taken and portion you should be eating can be determined after knowing your details like age, current height, weight. Your BMI, BMR.
So, certain nutrients will get limited you won't get high quality protein, Vit. B 12,
Calcium, Iron, Vit. D , Riboflavin.
For Optimal level of Vit. B 12 add nutritional yeast in your meals, diet.
Also, fortified cereals, coconut milk, soy milk.
For iron supplementation, take an iron tonic first consult from a doctor. Otherwise, take iron from foods like Green leafy vegetables, Amla, beetroot, grapes, apple, figs, dates, carrot, jaggery and more .
Next Steps
For a detailed vegan nutritional guide, transition from normal diet to vegan diet Consult.
Health Tips
Be Watchful of associated nutrient deficiencies.