Intuitively write.
On the one hand, it is less demanding than you might think for several reasons. The articles planned for SnapHistory are divided into a “pill”, normally around 1,500 characters and never more than 2,500. Then there is in-depth analysis, normally around 8,000 characters, never over 20,000. No one expects these articles to be the result of field research. It is obvious that these are reductions of larger, more complete and professional articles; or freely extracted from a book that was read for other reasons, perhaps pure passion. A “sources” space is available on the site where there are scientific texts from which “our” articles can be drawn. It could be even easier, because perhaps you have already graduated (both bachelor’s and master’s) and extracting articles from your thesis is very easy. Incidentally, there is a space on SnapHistory specifically for uploading theses. You could create an article from your thesis, and then, in the bibliography, put yourself and your thesis as a source, with a hyperlink that makes your thesis visible to everyone, readers of your article and anyone you want.
Often then, writings are created within an exam course, normally excellent as articles for SnapHistory, once the pill has been summarized. As you can see, the commitment can very well be harmonized with what is already done in normal study. Without major time commitments.
On the other hand, however, we need to work like historians, think like future professionals, pay close attention to bibliographies, be precise in the sources, look for hyperlinks that can enrich the text. Nothing that any teacher doesn’t usually ask you. The opportunity lies precisely in this, acquiring a professional and serious “forma mentis”, it is not a game, the article will be read.