Can I finish Visual Latin in one summer?

I received this question:

How many hours a day will my son need to spend to get Latin I and possibly Latin II done this summer before high school entrance?

Here is my reply:

If you are using Visual Latin, here is what I recommend.  At 60 lessons, your son could finish Latin 1 and 2 by September 1 just by completing one lesson a day.  In the beginning, the lessons are easy.  By lesson 15, they are going to get challenging.  

I recommend racing through the first five lessons, or so, in a few days.  That will buy you some time.  One lesson a day for the rest of the summer should take about a half-hour a day.  It could take an hour a day as you move deeper into the course.  

Let me know if you need more help!