Anxiety and panic attacks

How do you talk to someone who has anxiety, stress, panic attacks? Whenever my husband works he gets these almost everyday. It could possibly be lack of sleep because we do have a toddler who doesn’t sleep throughout the night. But mostly, stress from his job. He hates working there. I just quit my job so he could work at this place and I can be a stay at home mom. Now, he wants to quit today without having any other jobs lined up.

This happened before as well. I quit my job so he can work full time but then quit again with no job lined up. Our families were helping us with money.

How do I talk to him? I tried talking to him to help him calm. But it doesn’t work.