I just did 15 minutes or so of Duolingo.
I did three hours today. One hour was on my HSK level 3 book, and I spent another hour listening using my HSK 4 book, and reading about HSK 4 grammar. I have realised that this is above my current level and I don’t have a full grasp of the basics. I’m getting ahead of myself. So, I’m going to step back and go back to HSK 3. I spent an hour listening to the CD from my HSK 3 textbook.
I did quite a lot today. I studied the conversation questions in my test textbook. I found this section quite easy. That took about an hour, and then I spent another hour on my preposition book. I made it to three hours by adding an hour of Duolingo.