It is a subjective question, the best thing to do is to move forward when you feel comfortable, you'll get practice with those chords as you do.

You can't expect to get chord transitions perfectly right away, but as you incorporate new ideas and practices the chord transitions will get smoother. It's a fine balance between challenging yourself and getting competent with what you've just learned.

If it helps, you could make a log of new things you've learned that you think might need more practice, then spend a little time on each in your practice routine. That way you don't leave any "little kids" behind. :)