Washing In A Natural Way During Wudu And Ghusl
1 ) Exactly. 2 ) Fiqh is a readily available handbook which answers all the possible scenarios similar to the scenarios that arise in your mind as well. It is mostly based on ijtihad ( Mostly Qiyas ) of scholars done to answer every possible scenario that Muslims may encounter in their daily lives. Since more details will derail the topic from primary subject, you can post a separate topic if you need any further details. Following video will be helpful in this regard: https://youtu.be/4d2wqnCfERo
This is fiqhi approach indeed. As long as you’re performing things in a natural way, you need no bother about these things like changing nature of water etc. Also, these matters are very subjective in nature to begin with, as one cannot set a fixed threshold where one can say with certainty that water has changed its nature beyond this point.
1 ) Your experience is a good guide in this regard and you can trust it. Unless I know the reason why its taking too long to wash your face, It is hard to comment on it. Just follow the natural way how you wash your face. 2 ) As long as it is occuring in natural course of events, it is fine to do that. 3 ) As long as the water is poured inside the nose, the water has reached unless there is clear evidence pointing othewise. There is no need to investigate further. I did not properly undertand the Ghusl part, but minimum criteria for Ghusl is washing the body thoroughly.