Scaling plane mesh with low poly water shader?

So I've been following a YT series to create some low poly water (or in my case lava) and this is what I ended up with in shader graph (see image 1). Side note: Sorry for the scuffed text quality, idk why my shader graph is broken.

Now, this works perfectly for a 1x1 plane mesh, but scaling it up to let's say 100x100 will just scale the waves and the effect too. It doesn't look great. Ideally, I'd like to achieve the same result as for my 1x1 plane, but with a much larger one.

I played around with the noise and tiling in shader graph, but none of them seem to give me the result I'm looking for. I also tried pairing many 1x1 meshes next to each other, but the the waves don't line up together so you can clearly see there are several meshes rather than one big one.

So now I'm hoping that someone here might know how to go about it in a sensible way.

Many thanks!