If there's a silver lining to the turnovers, it's that they're thinking in terms of getting to the rim rather than settling for midrange jumpers. Tatum and Brown are now at the point that their shot selection is dialed in so well that Udoka has to remind them that there's a time and a place for midrange jumpers. The Heat are running them off the three point line, but rather than drive into a crowd of three people, Udoka's trying to get Brown, in particular, to realize that he can just pull up and shoot over Oladipo from 16 feet.
Similarly, they need to make the pass a beat earlier, but the mindset of drawing a crowd of defenders and looking to find the open man is a good one.
The turnovers are maddening, but they have their genesis in Tatum and Brown learning how to do the very things we've been yelling at them to do all along. It's just now a matter of them continuing to figure it out and learning a bit more nuance to those skills. If they turn it over 25 times a game they're going to lose, but I'm not terribly worried about it as a long term trend.