ANSWER:

Wiping the neck is not authentic!

Rinsing the mouth and nose is. However, doing it separately is not from the sunnah but it is not an innovation.

Why wiping neck is biddah but doing wudhu and taking water seperately for nose and mouth not biddah, though both come from weak hadith?

Ablution (Wudhu) | August 5, 2021 9:27 am
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my question is we know the sunnah way of rinse mouth and nose is to get scoope of water in hand and put half of it in mouth and half in nose and then blow nose .If i wash my mouth and nose with separate scoops means 3 times in mouth and 3 times in nose can i get less reward.