My CT with his gorgeous fins has sprouted fin rot. I'm doing the salt thing, but it's really frustrating. All that's happening is that it's slowely spreading

It's nothing too serious, just some rays melted off, but it needs to stop. I have maracyn 2, which I've read is great for fin rot. So I think I'll change my treatment.
Can someone suggest a dosage, the instructions REALLY confuse me. I have a 2 gallon tank (I'd prefer something like "1 tsp first day" Over "1/3 of the packet the first day") Please respond and thanks!
EDIT: Hey, I dumped out the packet and there is almost no powder in there. The instructions say 2 packets per 10 gallons first day and days 2-5 1 packet per 10 gallons. Does half a packet first day, 1/4 a packet rest of the days sound good?