Worldbuilding memory

With all of the great improvements I’ve seen over the last few years, one issue I recently discovered is the need for more memory in Worldbuilding. When writing single books and even trilogies, the current memory has been sufficient, but for a longer series, it’s lacking. I’m just starting book 7 in one series, and I can’t continue because of that. I try hiding some of the data, but it still isn’t working, even though the same amount worked in the previous book. It’s a fairly complex world-building sci-fi with multiple worlds, ships, characters, etc. Until now, it’s handled it well. Since I have 6 more books planned for the series, this will be difficult going forward.