Relying solely on the Schweser books

Is there any risk to this strategy?

I have never even opened up the CFA books except to read sections that I felt I did not fully understand when I read them in the Schweser books.

As I the test date is approaching… I’m worried that all my preparation rests in the hands of Schweser… Haha, well it’s the way I decided to study.

Should I be worried?

From someone who read both. I can say that I really enjoyed how the study guides structure the LOS’s. I think you should be fine as long as you have no trouble with the CFAI EOC questions

EOC? end of curriculum?

I would also highly recommend doing the EOC questions from the curriculum at the very least. I think it depends on your background. Use the questions to gauge your understanding and drill down.