+1 for the Rascher if you focus on the first pages instead of rushing to the altissimo! He has a very interesting chapter about building inner tone, I wish I had found the book sooner. If you dig a little it's availaible online on pdf.
Milandro is right about playing as much as possible everyday, but there are a few more specific exercises you could do also:
long tones: I don't get why people find them boring, they're only boring if you treat them like a chore! It forces you to find a comfortable way to play and to enjoy your sound. Then you can see what effects little tweaks of the throat and embouchure have on the tone. You can practice circular breathing, dynamic levels, crescendi/diminuendi, getting fat low register, getting clear high register, working to get an even tone thorough the whole ranger. Focus on one thing at the time, don't be obsessed with playing every single note each session, but don't neglect any either, focus on just getting it 'right' each time.
playing the higher octave without using the octave key (don't bite! at all or it's just detrimental to your embouchure, it's not a problem if you don't get the whole range at first)
playing the lower octave with the octave key pressed (it forces you to have air support and control and gives you a very robust sound quick, don't overdo it though)
Those two are great if done correctly, but are dangerous if not: don't bite, don't force and it'll help a lot. The second one is a bit dangerous if you force. Do it just a little and very calmly and methodically.
Meditation and yoga on deep breathing: this helps a lot if you're serious about it, you can practice it anywhere, which is a bonus. Good breathing is paramount! Meditations also helps improve focus and attention, which is always helpful.
I'll also add that playing with other musicians and playing in public is beneficial and necessary! Playing in group teaches you to be flexible and focus on your environment, playing in public (it can be in the street, doesn't have to be a gig if you don't want to) doesn't allow for complacency and help you get the best out of you! It's often after a gig that the practice sessions really 'soak in' at least for me.
Also try to get a teacher to check on you even if it's just once a month or every 2 weeks. Find a guy with a good tone and tell him exactly what you're trying to do, it'll save you a lot of time!
Hope this helps even a little, good luck with the jazz course and enjoy your sax!