Cook time for 7 lb boneless prime rib using reverse sear?

Hi everyone,

I used Kenji’s reverse sear method for the first time at thanksgiving (6 bone, 17 lbs) and it came out nicely. However, I spent the entire day babysitting it.

For Christmas, I’ll be doing a 7 lb, boneless prime rib at 200 or 220 degrees (sadly I didn’t write down what I temp I used at Thanksgiving!)

Does anyone have experience with how long this might take? I’ll be a bit busier on Christmas and won’t be able to able to babysit it like I did on thanksgiving.

I’m guessing because it’s boneless and smaller, that it’ll be a lot faster but I’m not sure how much faster.

Thank you in advance!!

(Photo of my first try at Thanksgiving attached)