Every successful head coach has to go through their growing pains.
I wasn't a fan of the D.A. hire, but all he can do is work to improve.
He fired the whole offensive coaching staff and replaced it with a system that is working in the NFL right now.
Do you know if he chose the previous OC or was he forced to use the same old system?
I can speak as a manager of 30+ years. All you can do is measure the plusses and minuses of your record and make changes accordingly.
Hopefully, the new offensive scheme is much better than the system created for Drew that didn't have Drew to run it.