I'd definitely say block him. You will not really heal if you still see their stories & what they're up to.
So I approached him about this, his response was that he’s not speaking to me for any other reason than that he misses speaking to me.. I feel that in my mind that’s cause there’s still something there but as he’s a male I’m sure it’s probably just that he doesn’t want to be alone, but he has a good support system so has no need to talk to me so idk why he is
Do whatever helps you! You could try it out by muting him so you don't see his updates and see how you go.