Gaining 1.5" in length and .5" in girth? In 2 months? Sorry man, there's no way in hell. Okay, I hate to be the brunt of the bad news but it aint gonna happen. Fast gainers get that in 10 months, and again that's really fast gainers who very dedicated. I'd be ecstatic to gain these kinda numbers in a year.
Just go at it like gang busters, in 2 months you can maybe squeak out a 1/4" or even a 1/3" and trust me you'll be really happy man. That would be awesome, then take it from there of course. Think of Penis Enlargement as a way of life, like working out in the gym or sumthin.