Help!

So Im starting p90x monday and I am currently on round 2 of insanity and this is my last week of it and I find myself tired and accomplished still after the workouts just not motivated anymore probably because I am really excited about P90x but I was wondering if i should stop Insanity the remandier of 3 days before starting p90x I want to get the most out of p90x and do not want to burn out or over work so should I take the little break and just do jogging for instance before starting P90x or power through the Insanity and then start P90x up monday and suggestions will be helpful?