2nd test

My second test is on Saturday. I'm scared shit less and instead of studying I'm here telling you about it. I have been studying non stop for the last 2 weeks and I feel like my brain is just mush now. Like it won't hold any more info about cardiac crap if my life depended on it(thankfully it doesn't just my job for the next 45 days!) I keep taking practice test and usually end up getting a grade between 60 and 80 (have to have a 70 to pass)so I guess my chances are 50/50 to pass but I tell ya I'm about to die.Anybody have any great last minute study tips?