Falling back in love

I’ve been dating my boyfriend for 4 years. He has lost interest and I feel way too clingy now. I’m always texting while he barely texts and he’s only affectionate and fine in person but over the phone it’s like he texts me every couple of hours and theyre bland. Sometimes I’m just put on r. I don’t want “just dump him” I want to know what I can do to try to save this relationship thank you