Struggling with OCD and Anxiety: Need Advice on Medication

hello, I'm Jack and I struggle with OCD and anxiety. I have been on 40 mg of paroxetine for a little while now (on this dosage for about 2 months), and I felt like it was the perfect amount. I noticed that I was a lot more balanced and I'd have less intrusive thoughts. when I did feel OCD it was much easier to practice exposure and response prevention and let go of the thoughts because I wasn't as trapped in the cycle. however, a couple weeks ago it was like I was back to before I started medication. I'm not sure why this is? I recently entered a new relationship and while I do have ROCD, because of the meds and therapy I was doing well at neutralizing these thoughts. today I'm feeling good but the past week I was very unstable and emotional. I was having OCD attacks daily and high anxiety and depression. alcohol could have been a contributing factor for participal as there was a day that I drank and I know that can make my medication less effective but I was noticing this before I had drank any alcohol so I know it's not just that. anyway, just wondering if anyone else has experienced this?. My therapist believes that my medication still working. it's just situational anxiety disrupting it but I'm not sure. I'd like to not have to change the dosage again because I'd like to just be at the right one. and with this dose it really did feel like the right amount. let me know if anybody has any advice. thank you