Look at schools you want to go to, look at their schedules for a CS degree, and how much is doable at nights and on weekends, if they have special programs for

Look at schools you want to go to, look at their schedules for a CS degree, and how much is doable at nights and on weekends, if they have special programs for adults, then start by taking one class at night or on weekends while working. In this manner you can end vacillation of whether to take the big step of going back.