I design window comes up too large and I can’t change. Very frustrating. System updated last night. Does this have something to do with it?

Does Command /Control +/-  change the size?

See if setting the InDesign preferences back to the factory defaults sorts the issue out. You can do that under the General tab in preferences, then closing and reopening the application.

What are your versions of InDesign and the operating system? Any screenshots will also be helpful.