Weaning from breastfeeding

My baby is almost one and I have enough freezer stash to last a couple weeks. For some reason I’m stressing out on how to wean. He’s used to bottles so I think the only issue will be the bedtime nursing session.

How long did it take you?

What was your method?

Should I wait until baby turns one then use my stash so it’s not wasted? Or can I start the process a couple weeks before 1st bday and use stash?