What should I be doing with my 3-week-old baby to ensure their developmental progress is on track? At this tender age, what activities or routines are most beneficial for fostering their cognitive and emotional growth? Should I be prioritizing structured sleep schedules, or is it more advantageous to follow their natural rhythms? Furthermore, how can I effectively engage their senses through simple play or interaction, considering their limited capabilities at this stage? Are there specific types of songs, sounds, or movements that resonate with infants this young? Moreover, what role does skin-to-skin contact play in nurturing a bond, and how often should I practice this? As I navigate the trials and tribulations of early parenthood, what should I remain mindful of in terms of their feeding patterns and overall environment? Ultimately, how can I strike a harmonious balance between caring for my own needs and attending to the demands of my newborn? These questions whirl in my mind, indicating the complexity of these formative days.