The to-go bottles (5ml) are basically for testing out the products or for easy travel.
Bottles are generally not filled to the tippy top because is can cause leakage in shipping. I would have to see the bottle to say whether yours had the normal amount in it. I will say I know AD doesn’t eyeball the contents of the bottle, each one is machine calibrated and sealed from what they have mentioned in the past. The plasticvs tend to have more evap and leakages then the glass bottles.
For all pheromone products whether they are from here at AD or anywhere else, you will have to find your correct dosage. They are not like perfume, they are not one size fits all and they are not magic. I suggest you read to get to get a better understanding of how to use them and what to expect >>>>>