I just need to know what my next steps should be.
Your next step is to make a decision. You can either:
(1) Plead Not Guilty to both charges and then offer to plead guilty to the speeding charge if the "Fail to Provide" charge is dropped. Or
(2) You can plead Not Guilty to both charges and defend the Fail to Provide charge on the basis that you responded as required. Or
(3) You can simply plead guilty to the Fail to Provide charge.
(without a guilty plea the speeding charge cannot succeed as the police have no evidence that you were driving).
Whatever you decide you must respond to he SJPN in the 21 days allowed. If you do not you will almost certainly be convicted of the FtP charge without your input.