your cycle is done, or a week from being done if I recall w have to reread cycle thread, so that would be adding extra but not required bac.
Those who sell bottle bac want this situation to occur, frequently. it’s not harmful, can $ add new bac several times and it will not hurt. Based on how you measure an end to a cycle the new bottle bac still might not close it though
*just went back and read, yours was a prime - caused misread yes now I recall. The seed alone will cycle fine, and if prime is still in the water then new bottle bac won’t change reading.