Know your lube like you know your body if it changes its time to go. Keep it in a cool dry place and it should last as long as it takes to use it up. I've got a bottle that I've had for a while (over a year) that still works the same and is my travel option/ back up. And its doing fine
I would contact the manufacturer or submit a support ticket on Eden. Because Sliquid organics has no icky preservatives that means it probably expires faster. It's a good idea to double check. The organic lube I buy has a 6 mo from opening expiration.
On a lot of makeup and beauty products, they put the shelf-life on it, sort of like the recycling symbol. It looks like a little circular dish with a number on the inside, standing for how many months after purchase it'll be good for.
That being said, the sliquid products I have don't have that. :/ I wish they did! Especially because this one is organic, I would imagine it would expire faster than other products. I would toss after a year, but if anything changes in consistency or texture before then, it's probably done for.