What does 45 mins of solid drawing look like?
At this point in your studies it should be pretty significant. You should be able to get a lot of high quality work done as you have a lot of practice under your belt.
This week you will work on the same image for the first 15 minutes of class all three times I see you. My expectations are that the drawing not only be accurate in proportion but also in things such as value and texture.
Begin with the children and what they are holding/using, and work from there. The points for these three days will be based off the progress and product both.