Can you skip frames with no animation? I have 1800 frames of animation to render for a school project thing, of which only 1/4 of it has animation. I have 7 more days and my computer just doesn't have the strength to do all of the 1800 frames in that time.

Can you skip frames that have no animation? Because that would really help me if there were only around 400 frames to render.

This is different than the other one because those answers weren't Windows compatible. Also, is there a way to only render 1 frame, then only a section on that frame onwards? I have what is technically a still image for ~800 frames, but only a small section is moving, is there a way to render the whole image, then only render and then use that image for 800 frames but only re render a small part of the 800 frames every frame... I didn't know how to word that right but I hope you get what I mean
You can skip frames where nothing changes.

Probably the simplest, is to manually render out different sections of the animations. It works by splitting the different parts into sections, and you render out each of these sections individually.

You do this by setting the start and end frame to match the parts of the animation you want to render, and then pressing animation, making sure that you have it outputting to the correct folder. You then repeat the process. With the parts that aren't animated at all, just render by pressing the render button, or by setting the start and end frame settings to be the same frame (making them only render that frame).

You then need to import everything into a video editor and stretch out the frames that where rendered as a single image instead of an animation.