A friend sent me some information on sleep parameters for achieving a positive sleep regimen. These are as follows:
1. Maintain a regular and strict sleep schedule of going to bed and awakening around the same time every day (+- 30 minutes) including holidays and weekends
I was able to achieve this prior to the injury. The research on sleep habits of indigenous tribal peoples suggests a sleep time of between 3 to 4 hours after sunset. This seems an appropriate metric for my own protocol.