My DS had a stubborn front tooth which wouldn't come out and meant that the new tooth has grown sticking out a bit. His next front tooth is coming through now and it is clear they won't be straight. He keeps putting his bottom lip underneath the one that sticks out because it's more comfortable and I'm concerned that will just make it worse. Is there anything that can be done at this stage or do we have to wait until all his new teeth have come through? He's 6.