When to supplement with formula

Laura
Hey, ladies. I'm a ftm and my lo is 5 weeks old and bf. I'm what old folks would call a "nervous nellie " lol. I count diapers and critically investigate my breasts for heaviness (as if I can tell that much difference..) and anxiously chalk up any crying to hunger and poor milk production. For some reason I have this fear of not being able to adequately feed my baby. He eats regularly enough and generally seems satisfied RIGHT AFTER he eats. He often falls asleep afterwards but when I go to move him or place him in bed, etc., he wakes up chewing/sucking his lil hands like he's hungry again. I feel like if he's waking up showing signs of hunger again, I must not be making enough. However, i also know I am horrible for overreacting and this is my first time. Maybe he's looking for comfort boobie? Does someone have any words of advice or camaraderie for me? I know that formula isn't the end of the world and it doesn't make me a bad mom, but it feels like it. I feel like I'm failing my son because I can't provide what he needs. Tia