isnt it always the same quest for each weekday? You wont have to boost 5 times a day before next wednesday. However, you will have to make 7500 level ups on saurday, which is much harder for stock runners. If you dont do a long stock run, just sell your company, selling the company cancels the boost. Sell five times and boost again after each sale. easy...
make sure the machine doesnt go to sleep. boosters do not count down while the game is not running (and also not during time skips)