try planning out the whole operation before you start, taking into accound your reinforcements and the time they will take to arrive,
for example, "I have 1st and 2nd platoon with me now, with 3rd + air support on reinforcements, ok i will atack objective 1 with these 2 platoons, then use 3rd as a reserve to attack objective 2 with support from the air" or something along those lines it helped me with that situation