Hi Trust,
WElcome to the board. Congratuations on retirement! I hope you will find a lot of helpful information and support here. LIfe changing events can be stressful as it is and I can imagine that living with a pwBPD adds even more stress to the sitaution, especially when it creates increased time together. It's important to udnerstand that this is also probably an adjusgment time for your spouse too.
We have several workshops on the right side of the page that can teach you ways to communicate better with your pwBPD and also ways to help take care of yourself. Stress can really eat away at you so self care is top priority. Here's a link to one of our workshops on What it means to take care of yourself.
https://bpdfamily.com/message_board/index.php?topic=112473.0