I don't have FSD but several years with EAP and I often use EAP in stop-and-go traffic, It works very well and really reduces the stress of being stuck. If you don't think it stops early enough, you can increase the following distance using the right-hand scroll wheel.
Adjusting the Following Distance
To adjust the following distance you want to maintain between Model 3 and a vehicle traveling ahead of you, press the steering wheel's right scroll button to the left or right.
Each setting corresponds to a time-based distance that represents how long it takes for Model 3, from its current location, to reach the location of the rear bumper of the vehicle ahead of you. Autopilot retains your setting until you change it again.
As you adjust the following distance, the touchscreen displays the current setting.