When studying for the CCIE you need to make a plan. I am following this plan from INE.
The important thing here is not that I’m using INE and you are using IP Expert or another vendor. The important thing is to make a schedule and stick to it. This blogpost at INE describes how to start out with smaller technical labs and then move on to full scale labs. It will also give you some tips on what diagrams you need to draw and how to successfully complete a vol2 lab.