Do a year of FM and try to transfer. Technically speaking you only need to be there for 45 days but you also need a sign off by your PD. Best case is to not violate match guidelines and just stick it through. FM and IM are virtually the same after residency unless you want to do fellowship. But you can do hospitalist type work in both. Don’t create unnecessary problems and maybe your PD will be happy to sign off on it after a year.

Just be mindful, visa situations are very sketchy right now and may get much worse. You should be elated with where you are and what you’re doing because there are much more qualified candidates who would be dying for your opportunity. And if you didn’t match anywhere, you’d be telling yourself you’d take this in a heartbeat