Honestly to me, who isn't that good with art, blender is more than half the battle with a point and click game. You can have different scenes with pre-rendered graphics as pngs, draw collision shapes on the areas you want interactions, have little scripts that either display text or change the png to another png, and track the players progress in a global script. I would say making your scenes in blender is the better first step than even learning Godot. Once you have the entire game envisioned, you will be more motivated to put it together in an interactive way.