Any tips for long distance relationships?

I’m new to long distance and he’s not. He’s had some pretty messed up stuff happen to him in the past relationships whereas I’ve only had ones bad relationship out of the two I’ve had. I visit him mostly because it’s cheaper. I fly because I have seizures and can’t drive, plus I wouldn’t have to pay for a hotel and stay with him. He’d have to drive six hours and split hotel costs just to visit me for a weekend. We have phone calls nearly everyday and make sundays our video game night. Conversations can be dull since we always talk about the same three things (sex, games, drama/our day). We’re doing our best to expand by asking scenario questions along with a few deep ones. I’m pretty clingy due to past neglect but when I know he’s out with friends I don’t call. He’s opened up about some trauma and how it’s affected his mentality with relationships. He’s not romantic anymore because he used to be and was called annoying (too many I love yous), cares about everyone and has been cheated on numerous times. I do what I can to validate feelings and communicate our troubles but also overthink the fact I’m too clingy for him. As much as I want to talk to him, I struggle to find common ground that last long. We do have lots in common which is crazy. This feeling of dread sucks. Advice?
Any tips for long distance relationships?
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