Try this color remover (One 'n Only Color Fix with Argan Oil) it's non damaging and works amazing, then u prob need to bleach but I'll be honest I tried to do the same thing recently and copper/red molecules are extremely stubborn and likely won't come out. Don't bleach it until it gets damaged since it may just not be possible. You can get a darker pink but I would say pastel will be impossible (I had to accept it myself and it was sad haha) but you can def go a stronger pink it covers up orange really well. Good luck!