I am still on level 1 myself and have struggled to get the pull ups going! I have stayed on level 1 until I can complete the day 3 workout correctly with no substitutes, I am much better now and hoping to level up very soon! Even just in the 14 weeks I have been doing the work outs I have seen progress of some sort every week and changes in build and physique!
Your time for day 2 seems to be a bit high though, I think you may have included rest time. I have been using this site for over 3 months with many questions and only saw thisyesterday, its a great guide!