Answer
According to all 4 mathaahib, it is Sunnah Mu’akkadah to read 20 Rakaats of Taraaweeh. These should be offered in instalments of two. It is Makrooh to offer them in instalments of more than two. (Tahtaawi Pg 410 Qadeemi).
and Allah Ta’ala Knows Best
Mufti Bilaal Cassim
FATWA DEPT.