Summary card image refresh interval to slow



I’m using a large summary card for my site, the information on it is very time sensitive, my understanding is that the images are only refreshed every 7 days. Is their a way to make this happen faster? Ideally I would like 15 minutes or at most 24 hours.

Also, I see that to be able to see the actual card you have to view the summary information on a tweet, is their anyway to get around this? I see suggestions on posting a image with the tweet, but I would like it that when someone mentions the website the image with the data is there to see and not hidden away.

The combination of these two things is making twitter cards somewhat useless for my use cases which is a shame as they hold great potential.