How to Resize After Effect Project With Layers to Bigger Size

Hello, 

Im hoping this problem of mine is an easy fix!

I'm currently working on a project that needs to be repurposed to a bigger scale. There's only one forum I found that had a similar issue however it was released back in 2020 and I dont think it works the same. 

My current project is scaled to; W:1080px x H:1920px and it needs to be scaled to; W:1920px x H: 2160px. So it's bigger and a lot more square-er...

When I follow the script format i.e; Files > Scripts > Scale Composition > scale Width. I am able to scale the width to the desired size but the height becomes fixed. When I Adjust the height in composition settings, the composition changes but the layers within the composition doesnt. 

My project has a lot layers that bases it off the X,Y,Z axis of the composition, i.e Lighting. Not only that, my project has 21 layers, so manually adjusting each one will take a long time and because this motion is time sensitive, I'm looking for a solution where i can resize the project with all the layers to its new size, quickly and effientingly. 

Thank you in advance, I really hope theres a solution to this!