Download a fasting app such as “Fast Habit”. After your last meal of the day, start a fast on the app. Skip breakfast next morning and see how well you are coping by monitoring your energy levels and hunger levels. If 16:8 or anything greater is too much to start with, then start with 14:10. If it helps, you can have plain black coffee to boost energy and suppress feelings of hunger without breaking the fast. Good luck.
Your hunger hormones love to work on a clock. If you eat breakfast at 8am every day, tomorrow you will hear your stomach growling at 8am in anticipation for its meal. If you can’t do cold turkey, baby steps are key to going into it. Start pushing your meals back slowly, even if its just a 1/2 hour. Today breakfast at 8:30, tomorrow 9:00, etc. Push it until you get to a point where you don’t feel hungry for breakfast and can wait until lunch. By then, you now are eating a 16:8 schedule if you eat between noon to eight. Congrats, you are fasting! Then you can learn about all of the other ways to challenge yourself when you get bored. :)