state = { date: '' }

handleChange = event => {
        this.setState({
            [event.target.name]: event.target.value
        })
    }

    <Step1
   handleChange={this.handleChange}
   date={this.state.date}
/>

<input
    className="form-control"
    id="Date"
    name="date"
    type="date"
    value={props.date}
    onChange={props.handleChange}
/>