I would suggest leaving him alone until after his first feeding or two.
Handling him too often can be stressful and that stress can actually lead to not eating.
And eating should be his #1 priority for the next few weeks.

I would offer small meals once a week until his stomach can acclimate to actually having food in it. Feeding a "starving" being too much can cause a stomach upset. So take things slow for a while, then you can feed him more often after.

The wheezy-whistling noise could be a respiratory infection. Keep an eye out for bubbles or mucous. It could just be a stuck piece of shed in his nose too. Just be vigilant.