You really don't have to do anything to take care of it. Treat it like a fish and just keep things stable in the tank. Assuming you don't have anything that will pick at it like hermit crabs, the shark will birth when it's time and you will suddenly see an open "purse" with a shark swimming around.
Not giving you a hard time or anything, but I have to state the obvious. That shark is going to get almost 2 feet long and needs open swimming area to accomodate it. I'd be remiss if I didn't recommend you look at getting atleast a 180 gallon tank to take care of it.
where's me money