Bonanza Boomers

Hi. I am fairly new to Bonanza Boomers and this is my first time on this forum. I hope I am posting this question in the right place.

I am working on a fan fiction and trying to figure out how old Joe was when his mother Marie died? The show seems to indicate it might have been only a few days, while the online lists, episode pages, etc. say he was under 5.

Here’s the quote from ‘Marie, My Love’.

‘How little time together we had, your mother and I, on the Ponderosa. From the time we were married until the time you were born.’ Ben Cartwright.

Thanks to anyone who replies.