I'm also a complete beginner. Started here three months ago. At the beginning the songs with simplified chords were fun, but then it seemed time to start really working. My 15-25 minutes of daily practice for quite a few weeks has been: the spider legs exercise (I can now keep four fingers down on the first four strings, but not many plucks sound good) and strumming the five chords from Lisa's lesson, making the three changes back and forth. In the last few days my Em/Am change got quick enough for me to go back to the song "Cross the Line". But only yesterday and at 75% speed was I able to make those changes at the end of the verse. So, mostly what I'm achieving is calluses, slower than I would like. I accept this is how it goes.