Welcome @lynnjenny
Lots of ideas for fast days if you read through the LEARN pages, and also look at the recipes.
Most people save all their cals for dinner, and opt for a high protein, some fat and (lots of) veggies meal, and get through the day with unsweetened drinks, maybe a salty drink too. And drink lots of water - I find warm water is easier to drink quickly, maybe with a bit of lemon juice.
Some people split the cals into 2 or 3 small meals. Look at the recently revived thread about what people have for lunch on a fast day.
Keep us posted on your progress, and tell us a bit more about yourself, your issues, and what you are wanting to achieve.
Best wishes and good luck.