Challenges of integrating quantum computing into modern encryption

With quantum computing advancing rapidly, there’s been a lot of talk about its potential to break traditional encryption methods like RSA and ECC. I’ve been wondering about the practical challenges we might face when transitioning to quantum-resistant encryption algorithms. How far are we from seeing quantum computers that could actually pose a threat to current cryptographic standards? Also, are there any real-world applications where quantum-resistant encryption is already being implemented?