Stopping food about three hours before bedtime helps many people go to sleep with a light stomach and wake up clearer, which can set a steadier tone for a psychedelic session. You can read more context in this tip about stopping food three hours before bedtime: why this simple routine can feel supportive.
Practical approach: make your last meal your heaviest for the evening, then switch to water or herbal tea only, and keep a consistent lights-out time. For example, last meal around 19:00 and bed at 22:00.
This is not a medical recommendation, and I cannot verify specific health effects. If you have dietary needs or conditions, adjust the timing to what feels safe and comfortable for you.
Hope this helps you prepare with more ease.