More or less a schedule

In general, you should work on 15 weeks.
Take away 3 weeks for the portfolio, leaving you with 12 weeks, therefore 3 weeks per section.
However, you should be spending most of your time on sections 2 and 3, so I would suggest 4 weeks for sections 1 and 4 (with section 4 taking 3 weeks), leaving you with 4 weeks each for sections 2 and 3.
That translates to more or less a lesson completed every 3 days.