For the series, there are a lot of passable extra frames, a childrens comic on the topic, dad loves mom.

There are a lot of unnecessary frames for the series, a children's comic on the theme of "daddy loves mommy."

Viktor Kirillov, how many should there be?

Viktor Kirillov, how many should there be?

Vlad Proshin,
As many as you like, just don't use any extra ones. I think three key frames would be enough here, but each one should convey the theme in its entirety, and each subsequent frame should only reinforce the idea, not dilute it to the point of a vague message.