I got caught on my transition from a 6D to a 5DIV only because I forgot not to use the touch screen in front of my partner. Now I just give notice with approximate timeframes, which tends to go better for everyone!Ha. I've been there.
For several years, I was able to get by with my wife thinking I had two lenses, one black one and one white one. But, eventually, that caught up to me. Then I found a better solution.
I started buying her cameras and gradually upgrading them as her skills improved. Eventually it got to the point where she was "borrowing" my lenses and I had to but a second 100-400. Now, she never questions my purchases, but the downside is I have to buy two of everything! To add insult to injury, she's a better bird photographer than I am.