Your IHIP is just an outline of what you MAY study. Most people use a generic one based upon (I think) some encyclopedia's contents.....and then just do whatever over the course of the year. I tell my educrat we've covered.....everything they say we need to cover.
Here is the link to all of my NY paperwork over the years. Feel free to borrow/steal whatever you like - after all I got my first IHIP from another NY homeschooler (http://homeschoolinginnewyorkcity.blogspot.com/).
https://drive.google.com/folderview?id=0B6kUXvPYaUDrbGtDOXlla2htTnc&usp=sharing
I think when we started out we were using Time4Learning....which has a handy "full curriculum" page I included in my quarterly reports.
Dan