You say that you worked for a "couple of months" .....as long as you earned less than $4400 in 2022 you can be claimed as a dependent on someone else's tax return.
https://ttlc.intuit.com/community/children-dependents/help/do-i-need-to-file-my-own-taxes-if-i-m-a-d...
If you and your child were supported by your mother then she can claim both of your as dependents on her tax return. Since you can be claimed as a dependent you do not enter anything about your child on your own tax return. A dependent cannot have a dependent. Your mom can get the child-related credits for the grandchild by claiming the child on her return.
You can file your own tax return in order to seek a refund of the tax withheld from your pay---it is in box 2 of your W-2----but when you prepare your return you must say in My Info that you can be claimed as someone else's dependent. That is very important.
For your mom:
IRS interview to help determine who can be claimed:
https://www.irs.gov/help/ita/who-can-i-claim-as-a-dependent
https://ttlc.intuit.com/questions/3113432-who-can-i-claim-as-my-dependent
To claim a grandchild as your dependent
When you enter the child’s name in Personal Info, you will be asked “What’s your relationship to [child’s name]?”
Choose “another person”
a drop down menu will appear that lets you choose grandchild
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
