It may well be a good idea but it also appears the schedule changes may not be totally implemented until sometime through Feb. I know this is frustrating and I have a flight booked on AA for early March that may or may not be impacted. It was not scheduled on a Max 8 but any juggling of schedules could impact just about any AA flight.

From the AA website:

Question: When will American run a schedule change and inform customers who were booked on a MAX from April 7 through June 3?
Answer: American had previously canceled service on the MAX through April 6. On Jan. 19, American will run a formal schedule change, and customers who were previously booked on a MAX through June 3 will see their reservation updated on aa.com. Additional refinements to our schedule through June 3 will also occur in February 2020.