Complex sentence: The videos were made over a period of 30 months, and were released approximately once per week to increase exposure, including media coverage, and to allow the public more time to consume and react to each video.
Split into simpler sentences: The videos were made over a period of 30 months, and have been released at a pace of about one a week. The purpose has been to increase exposure, including media coverage, and to allow the public more time to consume and react to each video.