Here are a couple of extra articles (blog posts) that talk about this idea of alternating adult-led activity with being busy-but-available. The message is similar, but it’s worded differently and gives some nice examples.
This post talks about doing adult-led activities, and gives a step-by-step example of how to do a very small, simple puppet show on your lap before going to a meal:
https://joyfultoddlers.com/2011/12/independent-play-part-i/
This post talk about being busy-but-available. It talks about the process of weaning a child off of your interaction if he’s used to you being his “main playmate:”
https://joyfultoddlers.com/2012/01/independent-play-part-ii/
Feel free to leave comments here, or on the posts themselves.
~Faith