You just sort of buy things on Jungle Lee and hope it will help.
I mean, the Golem/Lizard -> Sightstone -> Locket Lee Sin build isn't great, either. Lizard -> Randuin's -> Tiamat is only marginally better. He's in this bad place balance-wise where it doesn't
matter much what you buy, because you can do most of the things you need to do with virtually any items... but there aren't any items that actually make you do the things you need to do much better, either.
You just sort of get back to the item shop on Lee Sin and sigh. "I guess I should upgrade my Sightstone to Ruby for slot efficiency. They have a LeBlanc, so a Banshee's Veil? If I get a Randuin's maybe I can peel a little with that and Cripple. Bluh." Like, there's no item you pick up on Lee Sin and suddenly it's
on, there are just a bunch of items you
can build and may as well, because ward limits and the lack of Oracle's means the gold has to get spent on
something.