I don’t think you can reapply for a J1 and if you do you probably will be again committed to do a 2 year thing or a 3 year waiver. You could reapply after 2 years but only for H1.What are the options if you go unmatched on a J1 visa? Do you have to do a waiver and re-apply in 3 years?? How can you re-apply in one year? Also, I've only heard people in a J1 doing the 3-year waiver in the US, but I would rather go to my home country for the 2-year period and come back. Has anyone heard about someone doing this? Is it more difficult to find a job if you do that vs 3-year waiver here? Thanks!
Also if your plan is to do a waiver need to start looking for jobs asap.