Thats fine I have a springer spaniel and was told to give her two capsules a day for life and wasn't sure of the advise. Building it up in her system then reducing it makes more sense to me to be honest
Do you know this persons friends? If so join there company as often as possible and be really fun and friendly but try not to come across as desperate for his attention. Try to engage him in conversation and take an interest in what he says If you don't know his friends and are a virtual stranger to him, try to go to the odd place that he goes to and smile at him when you see him perhaps building up to saying hello once you have done this a few times. Eye contact is key here, try to hold his gaze and be confident about yourself. Guys love girls that are confident without arrogance and girls they can have a laugh with and getting on with there mates is very important. So make as much effort with them as much as you do this guy. If you get his mates onside your almost there. But most importantly if he just doesn't show any interest at all move on and treat him the same as ever and he may change his mind in the future. We all look for different things at different times. GOOD LUCK!
surely the dose would depend on the size of the dog?