Use Desmos as your pacing guide. No need to rearrange units!
Because someone said I had to....then don't do them.
You want to better meet the needs of all of your learners through targeted small groups.
In small group, you can ensure all of the students discuss the math concepts.
More controlled math manipulative time.
Reteach foundational skills that some of your studnets need to master grade-level content.