Frozen is a misnomer as metal and most other parts in that drive aren't going to freeze. Just let it sit overnight then give it a whirl.
The purpose of freezing is that it is supposed to decrease the warping/stretching effects of repeated thermal expansion/contraction on the platters over time. There is very limited success with recovery from freezing.
If the data is extremely important, you can have the drive recovered professionally. I have had very good luck with
Gillware. It will cost you, of course. Most recoveries I have sent off have been around 700 dollars. If that's not your goal, then try the freeze and don't sweat it of the drive doesn't work.
BACKUPS PEOPLE, Always have 2 copies of anything you wish to see tomorrow
(I have at least 3 at any given moment)