Sorry to say but 8 weeks is way too early to celebrate. They tend to reset their sleep as they gain major milestones and sometimes can completely flip their sleeping habits once they have one of their huge eureka moments about the world.. or just start teething
My daughter slept fine for like 5 years straight, and then started waking up around 2-3 am almost every single night for the next 18 month. That was fun.
