On 2012 Prius v Right Rear Trailing Arm Bushing?

My 2012 Prius v squeaking very bad in the right rear. This car has over 150,000 miles. I asked a mechanic. He said it was probably the bushing. I bought the part and I have a bushing press. I'm just wondering if I need to disconnect the brake lines and E brake to drop the arm down? I can't find any tutorials or diagrams. If you know of any please send me a link. Or what do I have to disconnect? Or can you leave it all connected and drop it without disconnecting brake lines? Thanks!