Thank you! I'll take a look.
The book really does provide guidance for supporting infant literacy development throughout. In each chapter and within each subsection there are examples specific for infants (along with example specific for toddler and specific for preschoolers)
Here are a few examples focused on infants:
From the book introduction:
"Have you ever watched an infant babbling away as you read to them? Have you listened to a toddler as they chant along with a favorite book? Or helped a preschooler by writing words that they dictate to you? From infants' curiosity about books to preschoolers' growing understanding that spoken words are represented by text on a page, young children are literacy learners!"
From chapter 1, Clever Communicators
"Teachers can talk about a variety of topics with children of all ages; these topics should attend to young children's interests and consider their cultural context at home, fostering home and community literacy practices (Souto-Manning & Yoon 2018).
For infants, whatever captures their interest at any given moment is the perfect topic of conversation. Talk about what they can see (for example, a ceiling fan) and touch (such as a soft blanket). Also, be sure to talk about what you are doing, especially when it involves them ("I am going to pick you up and change your diaper"). Diapering, changing, and feeding present excellent opportunities to talk. Even infants who are not yet talking can have back-and-forth "conversations" with you with their coos and babbles."
One of the strong points of the book is that early childhood educators of infant, toddlers and preschoolers can see how they each play an important role in fostering young children's language and literacy development.