How do I move on from a relationship that’s harming my faith?

Please don’t judge me-I need real advice. I know I made a mistake, and I truly need help. :( So, I got into a relationship that isn’t right Islamically, and over time I’ve seen how it’s hurt me. I met this sister online, we talked for months, met once, then it became long-distance again. It’s been more than a year, and deep down I always felt she wasn’t the right one for me-my heart just wasn’t at ease, but I ignored it. Before this, I wasn’t a jealous or anxious person, but now I’ve become overly protective and jealous, overthinking about someone who isn’t even my spouse yet. My mental health slowly got worse, and the bad outweighs the good. We share the same culture and religion, but our values clash. She wants us to marry and post our lives publicly on social media, but I prefer privacy. Her family wants her married soon, while my family pushes me toward studying medicine and marrying later. She thinks my jealousy is fine but hesitates to remove what causes it, whereas I’d do anything to ease her mind, even delete my accounts. She’s also unsure about wearing hijab fully, while I want to strengthen my deen and hope she’d do the same. We’re both 18. We talk through our disagreements, but I’ve noticed I sometimes miss prayers when I’m with her. Now we’ve agreed on no contact, planning to reunite when we’re both ready, and alhamdulillah I feel much closer to Allah and more focused on my faith. But I still struggle-I miss her, check her stories and profile, and it’s hard to stop. It upsets me that she seems fine, living her life normally, while I feel stuck. I need sincere advice on how to move on gradually. I don’t want to just ghost her or cut it off instantly, and I can’t get engaged now because my parents wouldn’t approve. I started the no contact because my iman was weakening, and I didn’t want to harm her akhirah or mine. I’ve asked before, and people said to block her completely, but it’s so hard when someone has been a big part of your daily life. Others told me to pray more-I do, but I still feel trapped. I really need guidance because it’s weighing on me. Jazakallahu Khairan.