Upgrade from free Xfinity Peacock Premium plan

Hi,

I’m enrolled in the free Peacock Premium account Xfinity offer. I previously paid for a Peacock Premium+ no ads plan, but switched to Xfinitys free offer. I HATE having ads again as they are always such long breaks. I want to upgrade back to paying for a plan with no ads, but cannot find where to do this ANYWHERE. Peacock tells me to go to Xfinity to manage my account/plan and Xfinity tells me to go to Peacock to manage my plan OR do it on my Xfinity streaming flex box (which I don’t have a streaming flex box. I have a Samsung smart tv that streams my Xfinity services directly.) This is maddening trying to figure out! Please help me lol!!

How do I upgrade from the free Peacock premium plan (through Xfinity) to a Peacock premium+ no ads plan?

Thank you so much!