Don't put too much pressure on yourself. It takes time to get that confidence again, and time in the saddle in the answer. Even short rides "count."

If you enjoy it, do it. I ride in the early morning, primarily because of my commute and work schedule. It's a great time of the day to ride. If you're in the city, you'll get the see the city waking up and you probably will encounter folks you'll see regularly. Invest in a headlight and taillight to be sure you're seen and can see.