correction–I am so sorry you are going through this. For the past year I’ve been dealing with my own difficult situation. I don’t know anyone frum in this situation so I felt very isolated and could not find a frum mentor or similar support.
Hashem knows this is tough for you and knows your capabilities–so maybe your nisayon right now isn’t to ignore the pain and function as you normally would, but rather to get through the next day or hour or however long you can manage.
Do you have friends or siblings who can offer some support, even if you don’t have a true mentor? As other posters noted, it also really helps to find other people who are dealing with situations similar to yours. If you can’t find a real-life support group, an online support group can be helpful too.