If that is the case, you would think Kaido would state that, like he did with haki. Momo it will be more a development situation, where he grows more accustomed to it. Luffy is a perfect example; he had to train for years to master his fruit. Kaido has no excuses; should be capable, especially during luffy fight being KO'd like that, shouldve been enough of a reason to awaken. Kaido awakening should be more obvious, like having another form like the new gen.