OK- after I got over laughing that the meds were called “Wind” drops, I looked at the math/dosage. Is “wind” the polite Australian way of referring to gas? Technically it’s not wind until you fart… 
The drops I have here at home are a generic version and the dosing is 20mg/.3ml- and that does seem to be the common strength from what I have seen.
Most sources simplify the dosing as 1-2ml orally. But the official dosing which my formulary states is 65-130mg orally (which the 1-2mls range falls into). I do not have any sources that figure the dosage by weight. So I think most owners base giving the higher end of the dose if they have a large rabbit or the rabbit seems terribly uncomfortable. I have smaller rabbit 3- 4.5 lbs, and I have only given it when I thought one of the buns was uncomfortable, so I only gave 1 ml.
The drops that you have: would convert from 100mg/ml and that equals to 30mg/.3ml. So your drops ARE stronger. I don’t know what you have to measure it- if you only have the premeasured syringe that comes with it… But you could give .65ml to 1.3ml and that would follow the formulary dosing.
1 ml is the same amount as 1 cc.