Get the basics SEO done and invest on right keyword groups, do a competitor analysis to see how difficult it will be to penetrate the market. Build a strategy for short term and long term. The old websites are most likely to have a quick result whereas, for new websites, you are required to do 4 to 6 months of SEO to see the results. That is accurate but bear in mind once you start seeing results, it will grow exponentially over time.