Emergency: 2 day olds pecking just hatched. How long can I leave then in the bator?

[stellacorina]

1st of all do you have a brooder,and 2nd of all if so put them in the brooder. on the first week temperature should be 95°.second week it should be 90°.
Third week temperature should be 85° . Forth week temp. should be 80° . Fifth week temp. should be 75°. And on the sixth and final week temperature should be 70°. Then on the seventh week introduce them into the coop