Nafilah of Ishaa is either two Raka'ats in sitting position or one Raka'at
in standing position, though the 2 Raka'ats in sitting position is
In the 2 Raka'ats of sitting position, you perform the Ruku' by bending
forward in the sitting position and recite ‘Subhana Rabbay al Adheem
wa Bihamdih , then sitting straight again and then going for Sujood
twice, then sitting again for the 2nd Rakaat like the 1st Rakaat.
If you opt to perform it in the standing position, it is just one
Rakaat with Surah al Fateha and 1 other Surah, then Qunoot, then
Rukoo, then the 2 Sajdah.