Hi! I am getting ready to start my starter. I have a question on the timing. Does the timing need to be exact? If I start it at 10pm tonight, do I have to feed it exactly at 6am tomorrow or is 7am ok? Then if I feed it again 8 hours later that would be 2 or 3pm, which would put Step 4 (12 hours later) at 2 or 3am then next day. The ongoing feedings I can do every 12 hours but it's just the first few that I am trying to figure out. Thanks!