With a JEE Main Paper 2 rank of 29,930, getting into top government colleges like SPA or NIT for B.Arch is difficult because their cutoff ranks are usually much lower. But you can still try counseling through JoSAA and choose colleges that have seats for ST category. Also, look for government or private colleges that accept JEE Paper 2 scores or NATA scores. Private colleges can be a good option if government seats are full. Keep checking for updates and apply on time.