I don't know about the 150hrs in 6 months but if you're not flying it will definitely hurt your chances. Flying, particularly instrument flying is a practiced skill. Once you stop, it erodes (hence recency requirements).
Given the intensity of the training, they aren't going to be keen on trying to to upskill people who aren't current.
They're also not going to be keen on people who get Level 2 and then just sit on their arse waiting for a call.