https://www.reddit.com/r/UncleVasya/comments/vkk3lb/uncle_vaz_advice_for_young_men_things_my_father/

He answers this in his "texting guide":

https://theredarchive.com/r/askTRP/where-has-mr-vs-guide-to-texting-gone.211125

Which tells you it's mysteriously gone -- but is thankfully backed up:

https://web.archive.org/web/20200809180203/http://authorcloud.co/MrVs-Guide-To-Texting-Girls-dq16ldatn

do you only contact your girlfriend when she contacts you?

No. Sometimes I'll contact her first.

suppose she hasn't texted you all day do you reach out to her or not?

Sometimes yes, sometimes no. It depends on what I feel like doing, not on wanting to elicit any particular response from her.

or always wait for her

No. Very predictable. Predictable = boring (for both of you).

is there a trp rule for this

Main rule is to be on your mission, so that these things flow naturally. But if you need to train yourself, then the 2/3rds rule is the way to go.

Stay busy, maintain a social circle of men, and prioritize the things you find fun and/or interesting. The vast majority of your time and attention should be spent on yourself. If she's living rent free in your head when you're not with her, you don't have enough stuff going on in your life - either you're not on your mission, or you're not having enough fun.

If you live for yourself, and she's just a recreational thing on the side, you don't have to consciously think about stuff like this. You'll genuinely forget to call her, you'll genuinely not have time to meet any time she wants, you'll genuinely leave her on read because something else came up. On the other side of the same coin, you'll be able to give her attention whenever you feel like it, without having to limit yourself, because you're afraid of coming off as too needy, or too much.

Til;dr: Just have stuff to do, stuff you would've done anyways. If you want a "rule", then it's the 2/3rds rule. But the end game is to genuinely not have her (or any woman) as a top priority. Consciously following the rule of 2/3rds becomes predictable too + it's no fun having a girlfriend if you constantly feel the need to calculate stuff like this.

The only time I contact my wife is for business(kids, shopping, etc) or sex. I tried being her girlfriend but it really dried her pussy up.

Nah this is one of those things you shouldn't follow a certain rule for. You should be natural here.