Hey! There is no set rule for what tutors will do - A good one will ask you what you want, and if that is 2U+3U in the same session then that's what you get

Getting tutoring for every single subject will be expensive (probably), so it's important to know that there are other options. Tutoring is amazing, if you need it, and pretty lame if you don't. For example, maybe for English you just need someone to read over your essays, you can do that on ATAR Notes for nothing. If it is just the odd question or concept in Math, again, you can do that on AN for free. Just needing more practice? Heaps of past papers, either from the NESA website or from a topic test style product
like this. All of these will cost less than tutoring (if anything) and so are great options if you think they are all you need!
If, however, you need someone to give personalised assistance for an extended period on a regular basis, then of course tutoring is awesome and totally worth it. That's what it is for. Not if you need odd questions answered or the occasional read of an assignment, but if you need that regular, comprehensive help that tutoring provides.
Fit for purpose is the big thing. So many students spend heaps on tutoring when they'd be just as fine with asking a few questions on the forums and doing a couple of extra practice papers. If you do want to pick up tutoring for those subjects, be sure it is worth it so you get bang for your buck
