Tips for Cadence drills without smart trainer

Today I did Monitor +1, as scheduler for Sweetspot Base and at several intervals the power + cadence requirements were at a dead spot of my setup: I had to either pedal too quick or too slow (higher gear) to meet the power requirements.

Whats the recommendation when this happens? Is it better to go low or high on the stated power? This is my third week with trainer road and many of the drills seem to require smart trainers and cannot be followed accurately with a regular turbo trainer.

Thanks for the feedback!