Microsleep, short episodes of sleep that you may not always be aware of, can disrupt your nighttime sleep. Particularly if microsleep occurs in the afternoon like it does for Darla.
3 tips here on how to avoid microsleep: Bright light therapy, going to bed early and delaying bedtime successively and taking a planned nap.
If you have trouble sleeping or any questions, please do not hesitate to send me and email at daniel@insomniainsight.co. Best!