My PF therapist had me test this but had told me that two of the most common stress incontinence issues are sitting and standing from a seated position. Now I do not experience any form of incontinence but she would ask me to sit down as I engage my core and pelvic floor and the the same standing. Maybe that is a good place to start for you, just sitting and standing to use your floor to squeeze that urethra, I don't know. If it works then perhaps that starts to translate to other things like walking.

Like I said, zero experience other than being told my PF therapist and learning in advance that if I have stress incontinence to control it in this way.