I don't know who decided there was an age where a child "should" move to a mat. I figure as long as he fits, is safe and comfortable then stay in the play pen!
Most providers move kids to mats because PNPs take up so much space and you either have to live with them taking up space or constantly have to put them up and take them down.
If you visited or if you're using a childcare provider found on DaycareBear, do not hesitate to leave a review. This will most certainly help other parents!
Updates
We expect providers to keep their listing and available openings up-to-date. However, to prevent oversights, openings expire after 45 days.