I wouldn't do anything different...here's what I did.
1) I had a very POSITIVE attitude about TBS. A lot of 2ndLts act like they are annoyed to be there when, in fact, there is a ton to learn. It is boring at times, but it's better than TAMU statistics. Soak up the knowledge you gain, it will help you be a better platoon commander. I've found that officers who say they hated TBS usually aren't really good officers. Maybe they did poorly, didn't get the MOS they wanted, had a crappy fire team, etc. Just my opinion.
2) Work hard. Like others have said, your character will be revealed in challenging times at TBS. Your decisions there will create a reputation for you that will last your career. I distinctly remember coming across guys from my company at 29 Palms that were turds. I told my Gunny to not depend on them for supporting our platoon because they were not dependable at TBS. The opposite was true for great officers. Again, focus on your character and your reputation will take care of itself.
3) Have fun. TBS will be the first, last, and only time where you're only responsible for you. Obviously, you'll have billets, but when you're a rifleman be the best rifleman, when you're a SAW gunner, lug that thing around with a smile and shoot the hell out of it (TBS will likely be the last time). My fire team was awesome and motivated. We volunteered for every night patrol (mostly to stay warm), carried extra pioneer gear, machine guns, barrel bags, etc. It kept it fun and created memories. Although I'm out now, I still keep up with those three great men. There will be times as a platoon commander where you'll dream of having little responsibility again, but after TBS, that isn't your lot.
TBS is what separates our officer corps from other services. IMO, it makes us better at our craft, regardless of our MOS and it can give us trust amongst each other. You should leave there confident in your ability to lead a platoon in combat, as by then you will have received more formal training than any enlisted man, with more still to come. It will be your charge to teach your men (and women) that knowledge and enhance the training, utilizing their lessons learned from their experience.
HTH