Yes, you can use your regular job to withhold additional taxes for your side income. However, please take note that your side job will trigger self-employment and income taxes so the additional amounts you withhold may not be enough. It would be wise to make a 3rd quarter and 4th quarter payment to help with the filing of your return. Below is also a link that can help in determining what your potential tax liability or refund could be based on your situation.
Self Employed Tax Calculator & Expense Estimator 2022-2023 | TurboTax® Official (intuit.com)
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