Usually, the shortest round that people do, according to Dr. Simeon’s original way of doing it, was 3 weeks. There have been some in recent times to try 2-week rounds – I have heard both negative and positive things about this. The negatives I’ve heard is that people getting of hCG that soon seem to have trouble keeping the weight loss off, more so than if they remain on another week – and this is actually what Dr. Simeons found. On the other hand, I’ve also read a clinic that prescribes 2-week rounds for some patients with only 5-6 lbs to lose do just fine and don’t struggle with maintaining.
That said, with 13 lbs to lose, I would say you will likely need a 3 week round anyway. Once you include your loading weight, and that weight loss is a bit slower for someone with as little as you to lose, the 3-week round will probably be just perfect.
I have more details on lengths of hCG rounds here.
