Good luck hey! Can you give us a quick run-down of the materials you've used to prepare, and perhaps your preparation strategy? Not sure if you've shared it previously, but I would love to have a look and see if I can't perhaps steal some tips from your methods ;-)
Sure
At the moment I have used
INE WB 1 & 2 (they only have version 3 out at the moment). I have done these books multiple times
IPexpert videos on demand (version 4)
Ipexpert workbook 1 (only 50% has been released)
User/admin guides for ISE, WLC and WSA
I also re-read the ccna security cisco press books.
For the actual lab practicing, I found that trying to build a large lab and test multiple things took to long to get up and running.
Especially when using gns3 and my vm environment (which includes acs5.3, ISE, vWLC and vWSA)
Instead, I am building small'ish scenarios practicing each technology in various ways.
IE, For vpn's, I will try do them with certs, with vti's, matching on different criteria (peer id's etc).
I am also removing configs and checking debugs, to see what the outputs are if certain things are removed or incorrect.
I noticed that its not always clear to see whats wrong, and would rather get a feel for what the debugs say.
As for studying time, im doing about 4 hours a day during the week, around 8 - 10 hours a day on weekends.
Since i havent done a lab exam before, I am going to use this one as a kind of learning curve (if i fail).
Hopefully, i can get a feel then of how they ask the questions, the time constraints etc.
My big issue at the moment is working on some of the devices. IPexpert has rack rentals, but they are booked until end of May.
INE hasnt got their racks up yet, so i dont have practice on the new IPS etc.