@betinaj FWIW, that module is where I got the inspiration to start MMM-Multimonth (I needed 3 months at a time, one forward, one back).
If you don’t care about events on the calendar, you could use my module and set it to one month (although, I’m playing with adding events from calendar).
If you do, there’s a much more elegant solution in MMRize’s MMM-CalendarExt3Agenda - it’ll take over display of both the built in calendar and a month of data in a mini calendar form, and is much more configurable.
Both of these are fully functional, will remain so, and are fully supported.