Bedtime protest

Wow. Wtf happened to my boy who loves going to be? Suddenly he's protesting even when he's shattered. He will scream 'open the door! Downstairs! Where's Peppa pig gone???' 😂😂😂😂 and then hysterically cry etc. please tell me it's phase?? As soon as he senses it's nearing bedtime he starts playing with more stuff and being avoidant to me talking about it. Any advice?? Xxx