Thumbs touching chest to floor press-ups, sets to failure or nearly so, set + rest = 2 minutes, 15 sets.

6 - 5 - 5 - 5 - 5 - 4 - 4 - 4 - 3 - 3 - 4 - 4 - 3 - 4 - 4. 63 in total.

I tried a one armed knee press-up - nope.