Bad Tming

At this time I should be preparing for my IQE but it seems that time is treating me like a fool....first, my bike suddenly use my petrol like drinking water...half a tank for a 2way trip to work..It using too much petrol but I really not idea where had it gone wrong..Secondly..I been helping my brother in my Pa work for the past 1 week...not enough rest for both of us..Lastly i not preparing myself for IQE...