How is it with 3 kids?

I’m expecting my 3rd baby and By the time the baby is here my two kids will be 4 and a almost 3 years old. I feel like I go crazy with just these two kids and I feel it would be chaos with the 3rd. But I mean new borns sleep a lot so maybe around the to 6-9 months is when the real fun will begin 🤣 also I plan on being a stay at home mom.😅😅😅😅