I am not sure if PADI has the bailout tests, but with NAUI, there were alot of tests that I had to be able to hold my breath for awhile. We have the snorkel bailout, for example, and it took me awhile to be able to get my mask/fins off and then get back down to get them all back on in a controlled manner. I just started practicing at Red lights. Basically, start holding my breath at the light and then see if I can hold out until it turned green. After a month of practice I was up to 1min 44secs. Good luck with your course. Just know, the work has just begun once you finish. 
Carolyn:shark2:

Carolyn:shark2: