I'm in 5th year going into 6th should I study over the summer a little to keep it going and if so what should I do ?
You should study a little, when you get into 6th year there isn't a lot of time left to go back over 5th year work. My advice pick a topic a day from each subject and spend half an hour going back over it. It will help you a lot when it come to exam time
Deffo make sure you've got the basics down in what languages you're taking down.
Start practicing oral work too as they'll soon be on top of you.