If I filed my taxes for 2023 and just realized I forgot to add one of my W2’s will I still get the original refund? Do I need to amend right away or wait?

I filed my taxes for the year of 2023 and I just realized I missed one of my W2’s on my tax form. It has already been sent to IRS and they show it’s been received, not approved yet. Should I amend my return right now? Will I still get that initial refund amount soon? Or will it be delayed? It was for a job that I had for a month and only made $500 or so dollars there. It shows it was accepted on TurboTax but just received by IRS. Do I amend the return right now or later? And will I still get the initial refund shown on my TurboTax? I’m counting on this to pay for car parts to fix my vehicle so any feedback on this would be much appreciated!