My advice is that you master “time restricted eating.” This means eat only meals no snacks. If the meals contain some sugary foods because you are used to having stuff like that and cannot quit cold turkey that’s OK.
Do not snack in between meals. Or, if you just can’t make it for a couple more hours until dinner time, have a preplanned healthy snack. Only eat sweets with the meal. You will be amazed at how much less you’re able to eat if you aren’t shoveling food down your throat every moment of your feeding window, but rather just during meal times.
Look up The Fasting Method Podcast. They talk a lot about time restricted eating. They suggest mastering that before even trying a longer 15 to 18 hour fast. But since you’ve already got the longer fast down now, focus on time restrictive eating even during your feeding window.
Eat. Stop. Eat. Do not graze.
I recommend you tackle the concept of “to do it quickly, if possible.”
It’s a lifestyle change. If you don’t plan to stick with it in perpetuity, you should plan to lose and then go on to find maintenance very challenging. IF is a holistic health shift, not a diet.