If you think that you are going to get fired, it is time to start looking for a new job. When you find one who is willing to sponsor your H1B, they can just transfer it from your current company. Your current company doesn't have to do anything. It is just like transferring after October. I am assuming here that you were approved this year. I transferred my H1B last year before October 1st, when my H1B would start. You should be ok if you have another job lined up.
Good Luck