Did the Buddha have more advice for the lay follower than is typically supposed?
I've seen this listing of The Buddha's Daily Routine where it is said the Buddha slept only one hour each night. He divided his days into a morning session and an afternoon session and his nights into 3 "watches".

It's said the monks would usually go to the Buddha to ask him questions during the afternoon session. The followers (which I assume means lay followers) would go to listen or ask questions in the first watch of the night (6 pm - 10 pm) and then the angels would do the same in the middle watch of the night from 10 pm - 2 am.

I don't know the origin of this information, but I can't help but be inspired by both the orderliness of it and the kindness of it, for the Buddha to devote so much time to helping beings find their wisdom. We've had a good question here on the site about asking questions. It's interesting that we here are still asking questions in this same spirit of seeking support for finding our own wisdom.

So with all that time devoted to answering the lay followers questions, one can imagine that there was plenty of advice given over the 45 years that the Buddha taught. How could there not have been? I think the monks who had to recite all the suttas orally for those many years before they were written down must have had their hands full. It seems logical that they would have focused on that which would bring the most benefit to those most dedicated to the goal of enlightenment. 

Edit 

One sutta from the Pali Canon which is full of advice to lay people is

Sigalovada Sutta: The Discourse to Sigala.