Low memory

I read all memory-reducing tips, but nothing helped.
I created library and do a lot of other things, My project is not so big. How could I check what is the problem and resolve it?

You can start with opening the quick actions panel ⌘cmd P and type in resource use.

You’ll be able to see a breakdown on how many layers there are in the project and how much memory it takes.

Are you using a prototyping features inside your library?