High power consumption using two transistor boosters
You are looking for a fix for a flawed design rather than a design that meets the requirements.  Pop up two levels and explain what you really want to accomplish, leaving out how you think it should be accomplished.

One of Q2 or Q3 will always be on, so there is over 1 mA just for the collector pullup alone.  Then whenever Q2 is on, there will be even more base current.  All this is just wasted current that ultimately only drives a high impedance digital input.

You say the voltage from the microcontroller isn't enough to drive the clock of the flip-flop.  This makes no sense.  If the micro and the FF are powered separately from different voltages, then you should say so.  You currently don't show the FF powered at all, so you really can't expect it to work properly.

It seems the ultimate goal is to control a low side switch from a microcontroller, using very little current in steady state.  The obvious answer is to use a FET suitable for the purpose.  If the highest voltage in your circuit is 12 V, then you have plenty of options, like the IRLML2502 for example.  It goes down to 80 m&Omega; with only 2.5 V gate drive.