Our exam is only 4 days into the new term, so we're going to have to carry on doing something over the summer.
I'm actually taking ds away towards the end of summer to a couple of sports camps - so that we'll have several evenings on our own in a travelodge with no friends, Wii, sattelite tv or little brother to distract him so we can do some practice at doing two papers with a 15 minute gap in the middle. Distraction free time isn't a luxury we have much at home so most of his practice has been on various online sites. As a result getting used to just using pen and paper and doing longer sessions to build concentration are our focus now.
I'm actually fairly happy with where he is on conventional VR, NVR and maths, so we're concentrating more now on vocabulary (things like freerice) and any non conventional exercises I can come up with (we get the Durham CEM papers here so almost anything could be on the papers - it's not very predicatable). Right now we've been doing some spatial reasoning stuff, things like the time-speed-distance questions and compass bearings they use for the RAF Officer exams (http://www.speeddistancetime.info/
) and daily cloze exercises which I'm producing for him (length very variable depending upon how much time I have!).
I'm not expecting him to do 45 minutes every day though (but probably more than that on average!) - so we'll mix up days of only 10-15 minutes and even some days off with days when he might do a couple of hours.
Have promised a proper long summer holiday next year though!