I'm not sure if i can afford to squeeze in 1 hr a week till late august
Are you kidding? One hour a week is nothing. How long do you spend doing other things: in the bathroom, watching TV, travelling to work, breaking for lunch? I find it difficult to believe you can't save yourself 10 minutes a day somewhere.
You do need to strike a balance between study and 'other' though. Too much study and you'll find it difficult to learn. Fit your flying lessons in as a break. Be wary of the 'four hour lesson' though - spending 3 hours sitting around for one hour in the air. Be strict with yourself, or take some revision to the airfield and make sure you do it.
At the end of the day you can always come back to flying later, you will find it difficult to motivate yourself to retake your exams.
BTW ... I got my PPL while studying for a PhD, so it can be done.
