well 2 hours/day, 30 days/month, so 60 hours to work and gain 1 BTC.
1 BTC = $1568 at the time of typing this.
So you would have to earn 1568/60 = ~$26/hour.
If you had 2 months time, ~$13/hour would be sufficient.
A couple of online jobs and things that would do it:
-Developing
-Transcribing
-Translating (My favorite)
-Buying and Selling
-HYIP stuff (You need some money to start earning and it's very risky, but potentially profitable)
-Casino (If you think you're good at having luck, go ahead! I'd prefer HYIPs though, but suit your needs

)
There's ofcourse alot of other things you can do, but this is just some stuffz..
Despite the fact that I have been working in this field for a long time, it is very difficult for me to say whether I can earn a month or a week. More than I can say how much was received for the subscription campaign, but only for other sources of income.