couple factors involved: want to make sure I'm withholding the correct amount

Last 8/30/21 we moved from NY to CT. We bought a home for the first time.

I have two dependents, children aged 4 & 2 years old.

I'm married and file jointly (and have for over 6 years now).

And I started two new jobs in the last 10 months. 

 

How can I know that I've been withholding the correct amount in my W4s?