Scored 700+ in official practice tests but 580 on real thing?

Hi everyone, Just wanted to ask for some advice on what I might be doing wrong here. So I've been studying GMAT full time for the past 7 months, and have seen my score improve significantly on the practice tests. Here are my stats for all 6 of the GMAT official practice tests: 12/12/20: Q47/V36 - 68...