The Office of the Citizenship and Immigration Services Ombudsman (USCIS) shared some tips for renewing DACA (Deferred Action for Childhood Arrivals).
The USCIS Office of the Ombudsman shared helpful information on DACA application renewals and suggested that beneficiaries do so up to 200 days before the expiration date.
The USCIS explains that submitting the application early avoids gaps in employment authorization. Therefore, it is important that applicants submit the application months before the expiration date shown on Form I-797, Notice of Action and Employment Authorization Document (EAD).

USCIS asks to verify the processing times of the cases before continuing with the procedures. This can be seen at the following link: https://egov.uscis.gov/processing-times/
Other suggestions and advice from USCIS is the verification of the application, it is worth checking that the correct forms are being filled out, since, as of September of this year, there are updated versions of forms I-821D, I-765 and the worksheet.
The USCIS asks to verify that the forms are signed and that the applicant has paid the corresponding fees for each one.
The most valuable advice, and perhaps the one most received by DACA recipients, is not to wait until the last minute to apply.
Check out the frequently asked questions about DACA renewals: https://www.uscis.gov/humanitarian/consideration-of-deferred-action-for-childhood-arrivals-daca/frequently-asked-questions#renewal