JUMP Math Program

I currently teach Grade 3/4 and have started using the JUMP Math program last September. I like the program and have observed students who often struggle with Math finally get it. My question and request for input is about covering the program in one year. Math is done everyday and there doesn't seem to be enough time left in the year to complete the program. My students have purchased the workbooks, so sending them home incomplete does not sit well. I have carefully reviewed lessons and even if a new lesson/concept taught everyday there is just not enough school days. Any suggestions?