I guess to get 1 bitcoin in a month or two is a difficult thing, but you can still make investments and trade, and if you have a lot of money it could happen, but you must have expertise in trading.
Before when the price was still below $1,000 earning 1 bitcoin for a month or two isn't that hard. But today, the difficulty of earning that amount per month has increased. The only way to make this amount for that period is by keep on investing to trading and he must do day trading so that he can have a good amount of return.