Are babies able to skip a leap, or will they confirm go through the leaps but just a little up down with timing?

I think there's no escaping or skipping a leap -- they're pretty much a rite of passage babies have to go through. It's a matter of how intense the experience is. Some babies go through the leap with not much fuss and others seem to be fussier beyond belief. All in all, be rest assured that it will pass after a while.