You can do it. Good advice here.

One more thing: initiate the lean by turning your handlebars very slightly AWAY from the foot you're putting down. (I.e., if you're used to putting your left foot down, turn your handlebars to the RIGHT after you unclip but before you try to put your foot down.) That'll ensure that your bike leans in the direction of the foot that's loose.

Don't try to change the foot you put down first. You're used to that now, so don't give yourself something else to think about that you don't need to. If you're used to putting your left foot down first, unclip left; and vice versa.