Cash drawer help

Okay, so my boss wants my store to try a different method on counting down money. We're supposed to have 150 in the drawers after deposit. But now she wants us to take out the 150 before we get out the deposit. Which doesn't make sense to me it seems odd and tedius

We're supposed to count our change first, fine cool. But if I start that way and have like 15.83 in change, how am I able to even take from my coins if my deposit balance is something like 593.37? Like, would I not have to take too many coins out?? Honestly, im just confused. Im use to adding it all up and then subtract 150, not counting to 150 first. That makes it seem like it would throw my coins off.

But we keep getting told that deposits are off. Also, the coin counter is off.