Decide the structure before the design
A page should exist because a real query or buying question needs it. Before anyone opens a design tool, write the URL map and the single job of each page. This is search-led design, and it is the cheapest decision you will make.
If you cannot say in one sentence what a page is for and what search demand it answers, it is not ready to be designed. Cut it or merge it now, while that costs nothing.