If you are not having enough withheld then switch to SINGLE on the W-4 form (even if you will file jointly) and/or remove the child. This will have more withheld if that is your wish.
IRS revised W4 from couple of years ago and in the new form instead of claiming number of exemptions, you have to calculate and enter dollars.
Use the Tax Withholding Estimator on the IRS web site to figure out what you and your spouse should each put on the W-4 forms that you give to your employers. It's much easier than using the worksheets on the form. It will let you adjust your withholding to get the approximate refund amount that you want.
Tax Withholding Estimator
Here is some information that may help you with how to complete your W-4's for your employers.
https://ttlc.intuit.com/community/tax-topics/help/what-to-know-about-the-new-2020-irs-form-w-4-emplo...
https://www.irs.gov/pub/irs-pdf/fw4.pdf
https://www.irs.gov/individuals/tax-withholding-estimator
