TSB 18-072 says an engine stall must happen under specific conditions for the TSB to apply. When the stall occurs a PGM-FI snapshot is captured. There is no indication in the TSB that there is a time limit for the dealer to retrieve the file.
You had a shudder, so there would be no snapshot. It appears your condition is worsening, so I suggestion you reverse the vehicle whenever possible after a cold start until a stall occurs. Then take it to the dealer to look at the snapshot.
I assume you have a '15 or '16 model. The warranty is 5 yr, 60,000 mi so you have limited time.
You had a shudder, so there would be no snapshot. It appears your condition is worsening, so I suggestion you reverse the vehicle whenever possible after a cold start until a stall occurs. Then take it to the dealer to look at the snapshot.
I assume you have a '15 or '16 model. The warranty is 5 yr, 60,000 mi so you have limited time.