I remember hearing in university that Latin gets harder the more one learns while Greek gets easier.
I started Latin in my mid 20s and continued through my 30s. I have decided that my 40s are going to be my decade of Greek. I haven’t decided if my 50s will be my decade of Hebrew or Old English yet.
I did a year of Greek and now I am working my way through Thrasychamus, so I’ll probably have a bunch of questions about that.