Guests not responding

Hi lovely ladies just wanting some reassurance that others would do the same in my situation! We get married in 7 weeks and had our final meeting at the venue today, and finalised numbers and food options. We sent menu options out in mid Feb with a mid March deadline as we knew we’d need to do some chasing before today. There is one couple who are relatives, but not close. We’ve chased them a few times for their food options and they keep saying they’ll get them back to us but haven’t. We sent another message last week and they’ve ignored it. I’m taking it now as they don’t want to come (we were surprised at the initial yes rsvp tbh) and I’ve not included them in the table plan. My fiancé is now worried they will turn up on the day and expect food but I said surely not as they know they’ve not told us what they want to eat. I think I’ll get him to send a polite text nearer the time saying that since we didn’t hear back from them we couldn’t put them down on the final list but they are welcome to come to the evening. There’s only so many times you can chase someone right? I feel bad for not including them but there’s not much more I can do. I’m notoriously too nice haha! X