There's barely anything too them. I'd say another 6-8 weeks. Yet another example of why I don't use autoflowers.
1. Green House Seeds is not a breeder known for their integroty, quite the opposite.
2. 65 days is clearly absolute bullshit in this example. DO NOT harvest at day 65. Google when to harvest cannabis and use that as your guide, not a breeders number (many many breeders will exagerate many things, because they can never be difinitively disproved for many reasons. It's actually daft, breeders who have little stability and sell strains with many phenotypes, due to the variance, they can get away with more lies, because if you don't see anything like they saw, they can jut claim it's becuase you have a different pheno.
In short, ignore the 65 day thing, learn about when you harvest, and secondly, GHS are generally not to be trusted or used, many MANY better alternatives (check out breeders boutique! great genetics, they tell you exactly how it is, even down to the potential of male parts on a certain strain, and best of all, it was created through this forum by awesome guys from around the world sharing genetics and knowledge)