I doubt it's the instructor's problem though, I am sure it is mine.
I have been an SLS student since 2007, but I had breaks in between and my lessons are not exactly regular sometimes due to schedule conflicts. I know how SLS works and know all the exercises required. However, I don't find myself progressing enough so I actually question if I have any talent to sing. I won't say I haven't improved at all, but after 2 years of SLS exposure, even with breaks, I should at least be able to wow people in KTV, yet I actually have people criticize me about having pitch problems.
Thank you for all the tips, as for the part of not having enough air, I would say that isn't the problem. I have lots of air, but my notes 'shake'. There are only 2 things I can relate this to, not enough support from the diaphragm, or weak vocal cords, or even both. Any tips to correct those?
If you've been taking lessons since 2007 with the same teacher and still face the same problems, i think you need to find another teacher. Really, all teachers have their own flaws, and seeing his/her nonchalant reply to your problems such as the hoarse voice etc is quite worrying. And of course the fault lies with the student, otherwise why would he/she be taking lessons? But if the instructor can't correct those faults, then what good is he?!
I usually have no problems going up smoothly from chest to head (around High C), but my notes become shaky or I feel like my cords are breaking when I descend. Any tips on fixing this?
No offence, it sounds like you still have issues with your bridge, but here's an exercise that should help.
Do Wee-wee exercises from top to bottom scale. Done right, the transition from head->chest should be smooth. This exercise, or any exercise for that matter, is not some magic potion that will allow the voice to automatically learn the right co-ordinations. It is merely a guide; it's entirely possible to be doing the right exercises the wrong way.
The other thing to practice is doing a siren, on an EE/OO sound from chest->head, bottom to top and back. Keep doing this all the time.
Lastly, how do I blend my voice into a song? Whenever I go to KTV or I record myself, my voice seems detached from the music, resulting in unpleasant singing.
SLS is technique; repertoire is repertoire. It takes
a lot of effort to combine the two and sound like a fantastic singer. The thing here is, SLS teachers usually won't proceed to work on repertoire until they feel that the student already has the basics/fundamentals of SLS built into their singing. Reason being that without strong fundamentals, it's easy for someone who's tackling a tough song to go back to their non-SLS habits aka. pulling chest, high larynx.
Yet, whenever I sing, my throat always has acquired phlegm and even while doing exercises that happens. My throat also feels kinda sore during/after exercises, and actually sounds a little hoarse (to me, coach says it's fine), sometimes having the feeling the cords might 'break'. My coach says it all sounds alright and I'm doing fine. I personally feel it's just a high larynx, and not enough training (since the ENT says it's fine) but any one have any insights?
This is quite troubling. Sounds like you're getting laryngitis often (See here:
http://en.wikipedia.org/wiki/Laryngitis ). It's not a good sign and honestly if you're doing the exercises right, you should never be getting this. I think 6-8 glasses of water is way too little, especially for a singer. The guideline for normal sedentary people is that amount.. and i'm sure we all know sedentary people don't use their voices 1/10 as much as we do.
Phlegm usually is a sign that you're not drinking enough water or your diet has too much food that produces phlegm, like dairy products as kilik already mentioned.
Put your hand on your larynx and do your exercises. Then see if your larynx shoots up during the exercise.
Lastly, how much practice time are you getting a day, not including lesson time? Cos if you're been doing SLS since 2007 til now and still face these issues, i don't know man, it sounds to me like you're not getting enough private practice time. At the very bare minimum, 30 mins of practice time per day is quite needed -- you can't expect much from the lessons alone.