My laptop generally sits at about 25-30% memory usage.
But some programs will resource hog. A local SQL Server itself is notorious for grabbing as much memory a it can.
I've got plenty to spare, it must be something else.
Editing objects was really slow in using an Azure Db for me. Things definitely improved as stated in recent posts thanks to input from forum. However it was too slow to continue developing. I changed to a local instance of SSMS 22 with near instantaneous Object Explorer now with exception to Diagrams which take around 10 secs or so on initial load.