You can convert a for-profit organization to a nonprofit, but it's a little complicated.
First, review your state's nonprofit laws and regulations to make sure you meet the requirements.
Change your organization's structure, governance, and mission statement to reflect its new nonprofit status. This may include creating a board of directors, revising your articles of incorporation, and submitting an application for tax-exempt status to the IRS.
Note that converting to nonprofit status is likely to have significant financial and legal implications. Consult with an attorney before making any changes to your organization's status.