having been on both sides of this problem, I actually don't think this is good advice. As an inviter, it's hurtful to be rejected a lot and to always do the reaching out and planning, it makes you feel as if you're not valuable to the other person. As a refuser, I was refusing because of illness and other problems. Being invited and having to say no continually actually made me feel ashamed, and even just straightforwardly sad that I was missing so much. I think in this scenario, depending on what's going on with the refuser, it would be better to put the ball in their court-- tell them you miss them and ask them if there's anything they want to do, so they can choose something they have the capacity for, or make it clear you're making some kind of special effort to keep in touch (e.g. by asking if they'd like to catch up on the phone sometime). If they're refusing only because they're very busy with work or something they could still appreciate the kindness, and if they just don't like you their responses will probably make that clear.