Insomnia Support Group
Insomnia is a symptom, rather than a disease, and is characterized by inadequate quantity or quality of sleep. People with insomnia complain of difficulty falling or staying asleep, which results in significant impairment of daytime functioning. Insomnia is categorized as transient (shorter than one week), short-term (one to three weeks) or chronic (longer than three...
When that happens, and you sustain that generally for a couple of weeks, then you can begin adding in more time by going to bed earlier. In 15-30 minute increments, something like that. While keeping your wake time consistent.
All that said, 5 hours is a tad short for most people. I wonder if you can get basically the same benefit now by going to 5.5 hours, which would put your bedtime closer to 01:30.