TM4C123GH6ZXR: PWM Frequency control and LOAD register

We're currently using the TM4C123GH6ZXR microcontroller to regulate stepper motors' movements through PWM signals, which control the timing and duration of motor steps. However, when we attempt to tweak the timing to adjust one motor's speed, we encounter a challenge. Altering the PWM signal's timing to slow down one motor inadvertently disrupts its movement precision. For instance, if we aim to reduce the speed by shortening the duration of the signals 'on' state, the motor may skip steps or overshoot its target due to the abrupt change in timing. We are using PWM0 based Gen1 and their two channels M0PWM2 and M0PWM3, so load register is common 'Load1'. We have requirement that we need to change the load register value as to control the total time of stepper motor. We have to use pwm in up/down count mode because the stepper driver is detecting the rising edges for inching movement of stepper motor. So is there any way to generate separate to load separate value for load register as to have separate timings for stepper motors. Our problem is related to Load register of generator which is present in PWM. For example, PWM0 Gen0 has LOAD0 register and this Gen0 has two channels OUT0 and OUT1, so in datasheet mentioned that we cannot change or timing output for channel. Let say I have loaded 800 value to LOAD0 register so value will apply to both channels. Is it true that we cannot control the LOAD0 register for each channel on same generator.