Verge of getting another offer, but Notice period sucks

Hi Guys, I have resigned from TCS yesterday, but my manager hasnt raised the separation yet he is delaying it and since our project is getting ramped down all associates are getting release by March and my manager also told that my probable last working day will be around Feb 2nd week, will I get any kind of update once my manager raises the separation as this time i dont want to loose the offer