Results can take 3 – 6 months and even then depending on the starting point results don’t necessarily mean high ranks. We need to know more about your business/the landscape of your industry. $600 could be a decent budget, or it could be basically nothing if you’re competing against businesses that have monthly budgets in the thousands.

The most important thing is if you’re struggling and using SEO as a Hail Mary you’re going to be disappointed. I’d recommend going back to your SEM campaign if this is the case as results are more instantaneous and you already have achieved results with it.