He is already a lost cause.
"This is the arc where Oda can rectify Sanji from Fishman Island and Whole Cake Island"
actually how many times you guys gonna say that sentence again and again?
Punk Hazard arc: this is the arc where Oda will redeem Sanji because he had a tag team with Jinbe against fodder
Reality: Vergo broke his leg, didn't have any 1 vs 1 win
Dressrosa arc: this is the arc where Oda will redeem Sanji after the tag team in FI, and broken leg in PH
Reality: Low diffed by Doffy, didn't have any 1 vs 1 win, ran away from Pekoms
Zou arc: in Dressrosa Sanji was absent. This is definitely the arc where Oda will redeem Sanji after the tag team in FI, broken leg in PH, and Doffy's low diff in Dressrosa
Reality: got kidnapped by Bege
WCI arc: This is very definitely the arc where Oda will definitely redeem Sanji after tag team in FI, broken leg in PH, Doffy's low diff in Dressrosa, and kidnapped in Zou
Reality: baked a cake for Big Mom (that failed to stop her despite the repeated hype), didn't KO anyone but Luffy.
Wano arc: This is definitely the arc where Oda will redeem Sanj-- whatever

Reality: ended up using Raid Shit (against his own words in previous arc) yet still ran away from Page One, leaving Nami and Carrot to get kidnapped and goes after hoes
Going by usual formula, what Oda has in store for Sanji is more embarassing moments. Just being realistic here.