Hey, bro!
No! You don't need to adjust the acidity in the humidifier; it won't affect the root feeding at all, even in a fabric pot. But don't overdo it with the humidity (not above 50% from the third week of growth), because the plant should get used to absorbing moisture through the roots, not the leaves. Don't pick my answer, as I'm not participating in the contest. Choose the answer from someone who can explain your problem in more detail, my friend.