i made a cranberry jelly that i make every year and should end up with 3cups cranberry liquid and you add 3envelopes of gelatin. well, greedy me, i squeezed every juice outta the cranberries and came out with more than 3cups.. now my jellu is way too soft. can i reheat and add more gelatin? what to do.. and if i can do that, how much more gelatin? another envelope?