As the Knicks move on to the second round tomorrow, it will be without Steve Novak and Amar’e Stoudemire. Novak is out indefinitely with back spasms as he missed last night’s series clincher after sitting out the second half of Game 5. Mike Woodson wasn’t even sure Novak will be back by Tuesday’s Game 2. The Stoudemire issue is in flux. Woodson had said Stoudemire would be back for the second round but because the Celtics series was extended to six games, Stoudemire was unable to start scrimmaging. When asked if Stoudemire would suit up tomorrow, Woodson said no. “He’s not at that stage yet,’’ the coach said. With Novak out, Woodson said he would likely turn to rookie Chris Copeland but chose not to last night. Copeland did not play for a third straight game. Copeland is still battling some shoulder woes, and admitted he is not 100 percent. The Knicks didn’t crack 90 points in the Boston series so Copeland could be considered for duty tomorrow.