All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad, is His slave and Messenger.
The governing rule regarding the issue of incontinence is that you do not have within the due time of a prayer enough time to perform the prayer with valid ritual purity. If this is your case, then it is sufficient to perform Wudhoo’ (ablution) once the time of the prayer has started and pray the obligatory prayer and whatever voluntary prayers you wish to perform with that Wudhoo’ until the time of the prayer ends (i.e. until the time of the next prayer starts).
However, if you know that the state of ritual impurity stops at a certain time, then it is incumbent on you to wait for that time, and then perform ablution and pray.
Assuming that you are suffering from incontinence, if you perform Wudhoo’ and then do not pass anything that invalidates it, then your Wudhoo’ is not invalidated when the prayer time expires. Accordingly, it is permissible for you to perform the following prayer with the same Wudhoo’.
Allah Knows best.