This solution will work for you if you want your child theme have fewer templates and if any template is missing, it should not break your blog but should go to parent theme and load it.

And a few important things to set,
1) parent theme folder name
2) child theme folder name
3) Template set in child theme style.css must match parent theme folder name

Because child theme name and Template set in child theme style.css are stored in options table.
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