I just did 15 minutes or so on Duolingo.
I was so tired that I only had the time (or rather energy) to read a few pages of my HSK 4 grammar book. I realised I haven’t been studying my 5 words a day! Back on it next week!
I just did around 45 minutes of Duolingo today. I’ve progressed to learning the past tense. It is good reinforcement of the points I learnt in my test textbook.