Poddi, I feel deeply what you are going through. My dd and ds were born at 32 weeks. They were very healthy, but 32 weeks is 32 weeks. Yes, I pumped all the time. My milk came in on day 6 (on the late side) and the only way to get my production to increase was to pump every 3 hours, on the nose, around the clock no matter what. Since I knew I'd have a schedule like that (or worse!) once the twins were home from the hospital anyway, I made sure to do the middle of the night feedings even though I was exhausted from a long labor and the whole emotional worry of it all. I used to tell myself "time to feed the babies!" for those 11PM, 2AM, and 5AM pumping sessions - somehow it made me feel better.
I'm sure you already know this by now, but what you need from the hospital are the VoluFeeds. Those are 60cc (2oz.) pumping containers and they give you lots of sterilized nipples to cover them with. As a side note, make sure to keep a handful of these -- they make the BEST mini-bottles for giving medicine in a little milk!! (almost all preemies need Iron drops and often many other types of things, and these little bottles so much better than a medicine dropper... e.g., iron tastes AWFUL!!)
In terms of timing for putting the baby on the breast, just make sure the NICU knows you want it as soon as possible. And as long as you are able to "kangaroo" with him, i.e., putting him undressed against your bare chest, it doesn't hurt to have her nuzzled by your breast... he may even latch on and surprise you!! Those are still some of my happiest memories ever.
Our NICU was extremely supportive of BFing... the research is so definitive and so well publicized that preemie breat milk is the absolute best thing for preemies (high fat, high protein, etc.), that they want you to give whatever you pump. Make sure you give the freshest when you can... e.g., if you're pumping in the pumping room, have them give that milk to the baby at the next feeding, since then it will be even richer in antibodies, etc.
This is probably going to sound horrendous to most moms who never had preemies under 34 weeks, but you do want to make sure that while he gets his NG feeds that he is sucking on SOMETHING. If it's your breast, great. Otherwise, it could be your pinky (ultra clean with no nail!) or a pacifier when you're not there. He needs to associate sucking with a full belly. This will help develop his desire to root and suck. It should be coming soon.
Also, a Newborn nipple shield made by Medela is sometimes helpful at getting a preemie to take the breast. No, I don't mean using it forever, but many preemies get used to sucking on a pacifier and/or a bottle before the breast, and you want their first experiences at the breast to be easy/stress-free for them. If your baby has trouble latching on, ask the LC about these. The LC at our recommended it. I hand expressed a little first to get the flow going and get milk in the resevoir. It worked great. However, the goal of course is to transition your baby off of it around the time he approaches full term if not before. I just mention it because I think a lot of us have a knee jerk reaction to nipple shields but in the case of preemies, sometimes they are really needed.
There are a lot of other things you can do to help if your baby is having trouble latching on. Finger feeding with a supplement tube (e.g., the Medela Supplemental Nursing System, or SNS) is a good way to get a baby with a weak suck to develop the suck without getting used to a bottle.
All in all, every day makes a difference. Do not get discouraged if he is not a breastfeeding pro. My ds latched on by 36 weeks equiv. but my dd needed intensive help with my LC and didn't really "get it" until she was 2.5 months old (i.e., 2 weeks past my due date). Hang in there. It is worth it more than anything. Preemies need your milk even more than full-term babies need their mommy's milk. A full term baby has antibodies already from mommy, but a preemie does not. They also need extra help "catching up" in size, and your rich milk is just the thing. Last but not least, their weak immune systems and digestive systems need all the support they can get. Even if you can only pump a couple of ounces, that is benefitting him so much.
It really is liquid gold.
You and your ds will be in my thoughts!