Hello

Sounds like your 2nd attempt is probably going to be more productive. Staying on a lesson until perfected can get boring and pull the fun out of learning guitar. However, we do need to go back to lessons that we had only partially mastered at some point and move further down the road with them. 

I don't see you mention songs. I would not put off learning songs. In the song catalog there are various sections from Absolute Beginner to Advanced, it might help to have a look at finding something that you can commit to just so you get a song under your belt.

good luck

Bill