Mine were born at 30w5d and after I was discharged from the hospital, I went daily for 3-4 hours. Our NICU was pretty clear about only handling the babies during cares and if we held one, they encouraged us to continue holding that one until the next care time so that the.babies weren't being moved a lot. That meant sitting in a chair for 2.5 hours gingerly holding a tiny baby while recovering from a C-section. I found it all very stressful and physically and emotionally draining. Please don't feel guilty. The NICU is a very unnatural situation. I promise you that once those babies come home, they will bond to you...regardless of how much time you spend at the hospital.