I go into a panic when I have trouble breathing
I know the things I can be doing to help like you say
Relax your neck and shoulder muscles.
2). Inhale slowly and normally (not deeply) through the nose for two counts, keeping your mouth closed.
3). Purse your lips as if you're going to whistle.
4). Slowly exhale and gently (do not blow your breath out hard or fast) through pursed lips, while counting to four. Exhaling should always take longer than inhaling.
This method works by creating back pressure that helps to keep the airways open a bit longer, allowing more air to come out. This also works to make it possible for more air to go in.
But like I said I panic And have trouble doing them . Thank you for the info it's always helpful