I feel ur pain
I got back in last week and luckily I had already beaten Radahn but I still had to fight my way through Leyndell and the Mountaintops to get to the teleporter.
At 186 u should be able rush through it pretty quickly, trust me you'll need the practice before u come to this shadow realm
True, I do need practice because I forgot how to do things in this game and also, I forgot how fun this game was. Brought me back.
All I'm doing is go straight to fight against bosses now so I can get to Shadow of the Erdtree DLC story.