Fredclarkeara After Dark repotting / dormancy

[Maxx]

Hi Everybody!

Finally I just got my long desired Fredclarkeara After Dark (see pictures) from an online seller, and have the following questions:

- based on the yellowing of the leaves is possible that the plant is entering its dormancy period, or is this caused by something else (please note that it seems that the last leaf has not been fully formed)?
- if the plant is entering dormancy, should I already stop watering (can I use fertilizer / seaweed stuff?), or wait until all leaves are dropped?
- is the small kinda yellowish knob at the base of the big pseudobulb a future growth, or an undeveloped past growth...I guess it is not a flower spike

Thanks a lot in advance guys!

Pictures