It might have the opposite effect, he might wonder why you blocked him and retreat. Also, how is he supposed to contact you if he’s blocked?
It’s hard not to lust for results, I sometimes have a hard time not doing it myself. Whenever I feel like I’m on the cusp of lusting for results, I change my mindset and think of the end result and enjoy it, like it’s already happening. I let of of the “whys, whens and hows” and just focus on the end result only. By that I don’t mean wondering if it will happen, I mean KNOWING it’s only a matter of time until it happens.
Thank you. I enjoy helping people 
There’s nothing wrong with going with a layered approach. Tackle the situation from different angles. For instance, maybe there’s another person, maybe the target has commitment issues, or maybe they’re being influenced by family etc. You might want to get some divination done to see if there are any obstacles that may possibly stand in the way. There are always members offering free readings, it’s usually on a first come first serve basis, so be on the lookout for those threads.
I’m not sure how comfortable you are working with spirits but you can always start with petition spells. They’re easy and have always worked for me. I do rituals to call spirits, but sometimes I’m “not always there mentally” and therefore can’t focus or concentrate, so I just do the petition spells in those situations. Here’s a great link: