I am hoping to synch my 6 cows within the next few weeks. All I have on hand right now is lute. I was thinking I would give them a round then give them another dose in 2 weeks, then breed. Is that the easiest way to do it? The reason I ask is that I'm at school so I'm not always around and it would be best to have them all come into heat around the same time so if I am not there my grandfather won't have to be watching for heats constantly. Is this the best way to do it or should I do it differently or invest in some different tools?