Step parenting

So I’ve known my step child son since he was 1 and a half. At first it was tough to build a relationship, he was conflicted and was being told not to like me even though he did. He’s now 11 and I had a break through last summer when he finally came out and told me what was going on with him being told negative things about me. I told him he must still love and respect his mom but see for himself and judge me for himself. We were doing good. But now since the quarantine, he hasn’t asked how I am or my daughter is which is okay. I know he can’t talk about me in front of his mom and he never told her about us having a baby. I guess not to start problems. But I tired to reach out to him via Xbox and he once connected with me then immediately hung up and second time ignored my request. I know he’s a tremendous parent pleaser, but I feel that he could’ve atleast been hOnest and told me he couldn’t talk or whatever. Anyways I feel like it’s time for me to lovingly detach from the relationship. Some might say he’s young give him time, but I didn’t meet him yesterday, I’ve been at this for 10 years. Every time he visits which is every weekend I still have to start all over again and convince him I’m good. I cant be doing this for too long, I have my daughter that is mine and really needs me. I will still be there for him but I won’t be the first to reach out or intervene.