I have completed Diploma in radiotherapy, my next program is Bsc in radiotherapy if I'm enrolling in college directly in 2nd year or 1st year?
If you have complete your Diploma in Radiotherapy then you get eligible for the later entry course of BSc in Radiotherapy i.e., you get direct admission in the 2nd year. Now you have to choose a college which offers the lateral entry course for example St Johns Medical College, Bangalore offers the lateral entry course for BSc Radiotherapy.
You didn't mentioned the name of the college/the state in which you are enrolling for the course. SO we can't provide you specific names of the college. If you want this information repost your question with the name of the college/the state so that we can provide you the required information.
To know more about Radiotherapy as a career, visit the link below:
https://www.careers360.com/courses/radiotherapy-course
I hope this answer helps. All the very best for your future endeavors!