It actually deserves the 4 stars for the continuity of plot and themes and how characters are treated and how mundane situation is explored in this realistic lit-rpg.
What causes me to loss interest and give it 3 stars , is that I hve accepted that this book is not for me. While I love how book 1 as a novelty and felt somewhat engaged with how book 2 shaped out. I don't find any of the character relatable to me. Realizing it is more of a me problem, and May be becoz I am not from America, or may be because most of the exploration is internal . The cast becomes stale, even when it is expanded a bit they remain secondary to the main family and felt like a crutch to not make our main cast feel NPC in this setting, Which is really alright.
Heck in one of my fav book series storm light Archive Barring Bridge 4 none of the character in the supporting cast becomes a prominent individual in their own right and I still love that series. May be what I am saying is that this series doesn't produce anything worthwhile to me, it explores parenting in apocalypse and did what it is being sold, but it never goes beyond that, and while I don't expect author to change because that is what they are selling in their title. I expect them to evolve out of the mundanity, make supporting cast more "human", not rely on American social understanding as a crutch, and tranform, the author stuck to their tried and trusted formula from the first, and while I don't fault them for it.
Author stuck to its title and I admire that, but alas, it is not for me.