Articles are marked as complete before they are read

Hello I would like to provide feedback and suggestions regarding the feature for marking articles as complete.

Currently an article is immediately marked as completed if you just open it, including accidently clicking the link or by clicking the "Next" button while completing lessons; this can lead to accidently marking an article as read even if you have not read it and someone could forget to read an article included in a course.

I believe it would be a better system if the article is marked as read after it has been completely scrolled though and possibly also if the "Next" button is clicked to signify that the article has been completed.
I would also like the suggest the ability to manually mark an article as unread or read incase it has been marked falsely, or if one finds they need to return to an article for further reading.

Thank you.