PriyankaAbad have you tried practicing to speak slightly higher and softer? It's your still voice, intonation, and everything, just a slightly higher range and softer. You can count from 1-10 to train your range to go up. That's what I do.
It's not 100% female voice, but then again, what is 100% female voice? Everyone has different ranges, right? Sometimes people think I'm a young boy, but most of the time, it's enough as an adult woman. 😊