Ah, I understand the challenge you're facing. When addressing your child about getting out of the bath, it's important to maintain a calm and understanding demeanor. Here's what you can say:

"Sweetheart, I know how much you enjoy your bath time, and it's wonderful to see you having so much fun. It's getting late now, and we need to start winding down for bedtime. How about we make a deal? You can have a few more minutes to play in the bath, and then we'll have some cozy time together, reading your favorite bedtime story. How does that sound?"

By acknowledging your child's enjoyment of the bath and offering a compromise, you show empathy and give them a sense of control over the situation. This approach might help prevent a tantrum and encourage a smoother transition from bath time to bedtime. Remember to use a gentle and soothing tone when speaking with your little one.