I had queried a small handful of agents from December-February with a book that was originally YA at 100k words. I got no bites at all. Months later, I did some soul searching and made some big revisions. Now it's MG at 60k. I was wondering it would be worth requerying the agents who are accepting MG. Normally, I wouldn't bother, but I feel like the MG change is so big that some may look at it different. If I did requery, how would I go about this? Should I mention I had queried before? Should I wait a certain amount of time? Like 6 months after the original rejection?