So I had a brew in the fermentor from October to February. Then after I bottled it it didn't carbonate so I consulted my brew books and the yeast most likely deactivated. One of the books suggested that I add more yeast to carbonate then recap. How much yeast should I add and how do I go about doing so? Do I add it to the bottles or do I put all the beer back in my bottling bucket and add the yeast there? Do I need more priming sugar or is the stuff in all the bottles still enough?