i think the burning of itachi's amaterasu helped as well so it would be possible for him to use amaterasu to generate storm cloudsIn order to create Kirin, Sasuke has to create a thunder cloud. To do that, he needs enough heat which he generates through the fire dragon jutsu. The only time he used the fire dragon jutsu was in his 2nd stage CM state. It is unclear if he currently has enough Chakra to do that jutsu and generate enough heat.
Kishi hasn't allowed him to performed the jutsu again. I don't know why since it'll be much easier to do now