You're looking at your calendar, trying to figure out when to schedule ABA therapy, and you realize you have no idea whether it matters. Does it make a difference if sessions happen in the morning or the afternoon? Your child seems sharper some hours than others, but is that just you, or is there something real there? You're not overthinking it. Timing does matter, and it's one of the questions we get most often from Bay Area families when we're putting together a therapy sch