Mark is on it, this is where automation is your friend, and at least in my case, a very good friend.
From the sound of it, either track automation or clip automation could help you out.
3.4 GHz i7-3770, 16G RAM, Win 10 64-bit, ATi Radeon HD 5770
2X PreSonus Firepods, Event 20/20's, Alesis Monitor Ones, Alesis Point Sevens
Mixcraft Pro Studio 8.5, Cakewalk by BandLab