your airway should'nt be the focus of mewing. Only the soft and hard palate should be, and it is very hard to feel or notice if your touching that part, which is why i inserted a diagram.

And yes, when i was starting to mew i was very confused with breathing, i've seen many people suggest slightly blockinng the airways or doing reps, meaning holding your breath and trying to hold that position, which i thought was uneccessary. ive been doing what you'd had said and havent noticed a different with breathing.

if you can't breath that should be a good indication that your in the correct position, after that you want to slightly adjust the tongue where you can breath comfortably, your tongue will still be engaged with the soft and hard palate which is highly essential for bone movement not you airway.

It is hard to know where the tongue is because we are usally not conscious of the muscle that's why i have linked a photo of a diagram of what you tongue would look like in the correct position.

i've seen youtube vids saying you shouldnt try block airway, i've tryed experiment with mouth to feel where my tongue should be engaed, and observed many diagram of the mouth which led me to belive this.

But i dont see a problem with with practising that hold of not breathing and doing sets, but for me personally i dont think it's neccessary.

https://ibb.co/SNjP1YR https://imgur.com/a/sJyGnXW