Here he can submit post links as per his wish, the rules mention that he can submit maximum 5 posts per entry. So he should not be forced, you cannot create pressure on him, then you can clearly see this post link.
https://bitcointalk.org/index.php?topic=5412657.msg66873638#msg66873638When you enter this link, you will definitely understand that there is a maximum of five posts. Each user can have the opportunity to use 1 link, 2 links, and 3 links without breaking the rules.
First of all, I'm not pressuring him to post 3 more. We forget a lot of things sometimes. I know they can post as many as they want, and there will be 5 posts per round. But I just made that post to remind him of his opportunity. I'm not pressuring anyone here, bro.
Should this even be a problem? As far as I'm concerned it shouldn't be, if they want to post only 1 then it's their choice, as long as they don't go beyond 5 then any number is fine.