My baby is 3 weeks old and breastfeeds pretty regularly every 3-4 hours during the day but has recently started sleeping 4-5 hours at night. Should I wake up after 3 hours and pump to keep my supply regular for her to eat during the day? Or would my supply readjust to her sleeping longer periods at night? First time mom and my biggest concern is eventually not having enough to feed her just to get an hour or 2 more of sleep!!