It's not necessarily as dramatic as suggested ..
(a) pre takeoff, check the speeds for a full thrust takeoff ... if your schedule is above then the min speeds are not a problem. Otherwise, be very careful ... but you should be on a VERY short runway in such circumstances .. and, if you get a failure, you will have your hands sufficiently full that pushing up the throttles will take a while to come to the top of the to-do-list. With the associated low weight takeoff, the likelihood that the speed increase won't have taken you well out of the danger zone is low.
(b) in any case ... if you do choose to increase thrust, do so SLOWLY. It is not unheard of for a rapid thrust increase to catch the crew out .. I recall one accident investigation with which I was involved where just this probably was the final straw which broke the camel's back in the initiating sequence of events leading to a nasty fatal pile of charred aircraft ...