I have a batch of wine that is made up of bakers yeast 4 cups sugar and one 12oz can frozen grape concentrate. I have then in milk jugs with balloons on top poked with pin holes. I have done with before and it worked fine, but this time it seems to be taking way to long to be ready to drink. I started them on 11/3 and its already 12/21. What gives the balloons are still up and bubbles are still rising. What can I do to speed up the prosses and for it to take less time the next time I do the next batch? Thanks!