there's no such thing as an "N-award"; there's only an N-warning and an N-determination. im assuming you received an "N-warning", which is fine as you need 2 or more for your school/principal to be able to apply an 'N-determination'. even then, that's when you've failed to take the action(s) stipulated in the warning letters to rectify the issue in satisfying course completion criteria (e.g. not submitting an assessment task).
regarding early entry, its dependent on the result you receive at the end of the course; solely having an N-warning doesn't impact early entry as N-warnings are not submitted to UAC or universities and are generally only retained at the school-level.