General:
* Repeating
* Duplicating
* Imitating
* Copying
* Following suit
* Maintaining consistency
* Sticking to a pattern
* Adhering to a routine
* Rehashing
* Reinforcing
More specific:
* If referring to actions: Repeating, re-enacting, replicating, carrying out, performing again, reiterating
* If referring to behavior: Continuing, persisting, persevering, holding firm
* If referring to ideas or concepts: Echoing, mirroring, paralleling, reiterating, reinforcing
The best synonym will depend on the specific context of your sentence.