If intercourse is a priority for you and your relationship, you have to make the time for the physical therapy. I have the same/similar problem and despite a very stressful and busy schedule, I forced myself to go to my appointments and practice at home as much as possible. Going to PT kept me accountable, even when I was feeling overwhelmed, and gives you the initial tools and instruction you need to learn to help with this. Don't do this for your SO - do this for you.
This can be stressful for you and your relationship. It was for us. I felt "broken," like this was "my" problem, etc. and my SO was supportive and understanding. He gave me time to do my exercises at home, we tried to stay intimate in other ways, and he understands if sometimes intercourse just isn't going to happen. It sounds like you guys need to talk about what you want and how you feel. I wouldn't want to give oral if I felt like my SO didn't like it! Talk. And just plant the seed in your head that this might not be the right relationship. You deserve someone who loves you and accepts you the way you are and who is willing to weather storms with you. Good luck, honestly.