Mazoor woman changing her liner for every salaah

Q: I consider myself a mazoor (excused person) due to chronic vaginal discharge. Nothing excessive but I have leaks especially during prayer. I wear panty liners to absorb the discharge. Sometimes theres a lot or just a few drops or even none (between prayer times). Example due to work I pray Zuhr at the end about 10 minutes before Asr. I still do a new wudu for Asr even though the time is very close. I do a new ablution for each prayer.

My question is, do I have to change the panty liner for each prayer? Or can I keep wearing the same one for 2 or 3 prayers?