There isn't much time left to improve your team. The time for trades is upon us.
If you are struggling but could still make the playoffs, you should take some risks. If you have a strong team near the top of the standings, look to make smaller deals to round out your depth at thin positions. And, of course, if you can get top players on the cheap, go for it.
You may not need to make any trades at all. But don't be complacent. Explore every possibility. Nothing will end with a bit of humble pie more than resting on your laurels because you're convinced your team is so good you don't need to do a thing.