[2019] Is there currently a way to duck out of and leave your Kuva Lich once it is active? Need some help with this system.

So I decided to give the new content a go and get my Kuva lich after putting it off. Maybe I've been doing this the wrong way, but it's really not for me. My lich is now level 4 and is becoming really hard because I can't get close to it without it teleporting away and regaining all its shields.

I either need to know how I can stop it from teleporting so I can actually damage it, or how I can just get rid of it and leave this content alone as it's really not for me.

Is there a way to "opt out" so to speak when it is already active?

Thanks.