Too much is when drinking causes problems of any kind, and you keep drinking anyways.
But in the US, the standard limit for "moderate" drinking is 2/day for men, 1 for women,
https://www.niaaa.nih.gov/alcohol-he...binge-drinking A binge is 5 or more on the same occasion. DSM-5 has a standardized test to see where you are on the alcohol use disorder spectrum, if you answer honestly,
https://pubs.niaaa.nih.gov/publicati...et/dsmfact.pdf Most people don't need to count drinks to stay well in the light/moderate categories, so the fact that you're counting suggests a problem.
I was a binge drinker for many years, Friday and Saturday nights only, not too extreme but often more than 5. Eventually (in my 40's) it became a lot more than 5, regularly, but the real tipping point was when I started drinking during the week. Then, it wasn't just two days where I might binge, it became seven, and down the hole I went. That process was also progressive, and it took 4 years before I was off to rehab.