do you mean the "F" open chord or barre chord? I'm not quite sure why they teach the open chord version here so early in beginners lessons. It's a tough one. Both versions are tough!

In either case if you go back and struggle don't worry about it. Yes, you did master it. Each time you go back you will progressively hit it more often.

My first encounter with the 6th string barre chords was hugely frustrating. Now I can hit it and all the strings sound clear every time. It's the 7 versions that are now driving me crazy!