how do i get into the dlc shrines early

I think you can wrong warp into one of them, I don't know if that's possible with the DLC shrines. Linkus7 has a wrong warp tutorial, I believe, that might give you an idea of how to get into those shrines. Again, I don't know if this is possible with DLC shrines, but it could be. Someone else might be able to get you a more accurate answer than mine, though.

The fastest way is a buffered scw but that can be really hard. The other way is an infinity scw but which is much easier but there is an added element of luck