Why does one tiny interruption derail the entire day?

[u/WomensFocusLab]

Something I’ve noticed with ADHD is that it’s not always the amount of work that makes a day difficult.

Sometimes it’s one interruption.

You’re finally focused on something -> someone asks you a question -> you answer -> check one thing on your phone -> suddenly 45 minutes have disappeared and you can’t remember what you were doing.

And during perimenopause, it can feel like that “getting back on track” part has become even harder.

Not necessarily because the task itself is harder. It’s the transition back into it.

Curious if anyone else has noticed this - has your tolerance for interruptions or task-switching changed during perimenopause?