How do you play a save long term without corruption?

I tried to do a search and couldn't find a topic on this so I hope I am not breaking the rules posting this. Anyhow, I very rarely have a save that I play long term as I get bored easily. Lately though I hit upon a game which I am enjoying. I have played it for about a week so far real time, and last night the game wouldn't save said error code and gave a long number. So I tried to roll back to an earlier save, but that didn't work as I got the same error.

Here is the situation. I do have a couple of mods mc command center, ui cheats extension, and the national bank mod I have had these for a while and all are updated. I do have cc but have had it for a long time. Anyhow I have a female sim who used Don Lothario as a sperm donor, and she had five children. After they aged into toddlers, she got pregnant by alien abduction and had four babies. After Don's kids became children the four alien children became toddlers. My sim who gets abducted on a regular basis lol, came back again pregnant with 6 babies. I paused her pregnancy so I could age up Don's children into teens and move them out leaving the four current alien babies as children in the house. All is good so far. After the teens aged up, I moved them out, and then continued the pregnancy leaving the mother and the four children in the house. I saved a few times no problem after that. Then the babies were born and the next time I tried to save, I got the error code. That is when I tried to recover the save but didn't work.

I am so bummed as I was having fun. Luckily I saved Don's children to my library along with the four alien babies and my female sim who was pregnant at the time with the six alien babies into the library before the corruption occurred. So I am going to put all of them into a new save.

I know you shouldn't use save as for a long time, and to occasionally do a new save which I try to do, but is there anything else I can do in case when I start this new game it gets corrupted again? I should mention I do know about clearing caches and I did that before the game got corrupted.

These alien children are turning out so pretty in disguise and out of disguise. I want to see how these other six turn out, but no point if every time I play and they are born the game gets corrupted.