Why spoilers?
Also no, he didn't fully regain his output. Otherwise he'd just one shot these two to blood mist. They say he recovered enough output for rct (Kusakabe).
黒閃で 反転術式の 取り戻した 五条に対し
“Gojo recovered enough output to use reverse curse technique thanks to the black flash”
If Gojo recovered his output fully, I guarantee you they're getting one shotted. Because these other two rn have extremely low output like gojo (earlier that is, gojo landing bf helped him start recovering) does (Heavily implied), especially with Sukuna's rct (CE output) dwindling down low enough, like Gojo's was before, though unlike gojo, who is starting to recover some good enough of it, to use rct to a passable level, Sukuna's was still dwindling down.