"The Art of Forming Young Disciples: Why Youth Ministries Aren't Working And What To Do About It" by Everett Fritz, Catholic speaker
https://www.amazon.ca/Art-Forming-Young-Disciples-Ministries/dp/1622824822
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Admittedly, I haven't read this yet myself, but it has been recommended to me, and a trusted friend of mine read it and discussed it with me quite a bit. It advocates for the use of small groups as a way of discipleship.
Thought it was still worth recommending if it speaks to anyone in their ministry at this point. Perhaps the model advocated in the book is translatable as a virtual ministry, using Zoom.