I think it is a combination of both. But at least things are making some sense, right? Is he happy in the morning? Lyle is also doing 10h20m at night right now, and he is doing great. In fact, when he gets more we start having trouble with his nap.
How's he doing during the day with the naps. Is he happy going down, waking up, etc.
What did the second day look like in actual routine form? Curious to see what you did for the naps.