that’s a difficult situation. but, you shouldn’t feel too locked in. we’ve had graduates who started in another specialty and switched to NS, and vice-versa. And we’ve had loads of people take additional time during residency (including adding full phd’s to residency), so 12 months isn’t going to affect you in the long run.
Probably the simplest thing is either (1) continue w/ your present match, and once you begin internship begin applying for NS match for that year. I’ve seen people change programs w/in institutions, so if you like the NS dept at your ‘matched’ institution, you could communicate your interest directly w/ the NS program director. If you matched NS that year, you’ve already done your internship year and may not have to repeat it, depending on whether the internship is infolded in your newly matched NS program. (ours is, for instance)
(2) Another option is call the NS programs you are interested for possible consideration of a late interview date. Our program interviews through January, and other may go even later. Ultimately, the Chair & program director will generate their match list. There is no absolute rule that says that you can’t apply even after the deadline for applicatons.
One other option is to take a research year at a program that you really like to put your application together and build more recommendations.
In the end, a single year is really nothing to worry about. Residency is long, and fellowships are getting longer (1.5-2 yr in some cases). In 2-3 years time, you’ll have this easily behind you.
The BEST advice, though, is to get a NS advocate in your corner. If you have relationships with the NS dept at your med school, go to them now and explain your concern. If you get the ear of one of their faculty, s/he can make calls for you which will make ALL the difference in the world.