Constant weekly or monthly update would be better to attain better rankings. It's purely depends on your competitors.
SEO is a continuous process if you don't work on your website for a long, you will loose your rankings...You should keep checking your website rankings and then make changes accordingly. Although, you should keep working on off page activities like link building, article syndication, PR syndication etc to gain back links and rankings as well..
BlackhatSEO
0
Junior Poster in Training
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