periodic payments vs required minimum distributions

Widowed male (age 81) put pre-tax money in a 401(k) plan during employment; on retirement at age 62 he began receiving a monthly distribution.  The plan accounts are now managed by T Rowe Price.  The monthly payments have never increased.  The individual is concerned that the required minimum amount for 2021 (based on his age and account balance) will be more than the annual total of monthly payments.  What is his best option for determining whether the payments must be increased? (The original plan was sponsored by Westinghouse).

Thanks!

He will know his 2021 RMD on January 1, 2021 because the RMD is based on the 12/31/2020 balance.  He can ask T Rowe Price for an RMD in the amount of (2021 RMD -  total amount monthly payments).

16 hours ago, M Norton said:

What is his best option for determining whether the payments must be increased?

Um, comparing the RMD to the total payments...?

thanks, BG5150!