Silly me... I just assumed there are options on wait steps... I would have sworn I've used them in the past.
🙂 Sorry for the confusion.
You would have to structure your nurturing differently. Instead of having the wait steps interspersed with your send emails, you structure them using the method Marketo has called "traffic cop". Then make sure you have qualified out your leads from getting the emails they have already received. Here's a link to the webinar on advanced nurturing concepts: https://community.marketo.com/MarketoArticle?id=kA050000000Kytv&src=comm You don't actually have to have the overall controlling traffic cop, but essentially you need the structure of each of the individual nurturing tracks.
If you want to keep with simple nurturing, then the easiest/faster thing to do is create a different campaign for leads that needs to skip the earlier emails/wait steps.