Porn induced sexual dysfunction

So I’ve been with my girl for 5 years now. Last month she got pregnant and now i don’t get an erection when it’s time to have sex. Unfortunately she had a miscarriage last week, when we tried to have sex again I still couldn’t get an erection. I thought it was because of her being pregnant but now I see it’s deeper than that. I’ve confessed to her that I have a big problem with porn, that I fap almost everyday twice a day. To try to better the situation I suggested that we watch porn before sex, I got an erection and we got through having sex but now I discovered something, I discovered that I can only get aroused if we watch porn and I don’t want it to be like that, my girl is really beautiful and I feel like I don’t need that, so I’ve suggested to her that I want to Kinda like re program my brain, take all porn and orgasms for like a month or so to see if we can get back to normal, I really want to work this out and get back to my old self, question is do you guys think that this will Work or do you think it’s over for us? Please help, thanks for reading.