My husband will not do okay

I don’t feel confident about my husband watching our 6 week old and two year old by himself when I go back to work. He gets really frustrated with our toddler and doesn’t really play with him and that makes our toddler get a lot of energy and get really hyper. He just sits on a couch and only gets up if our toddler wants food. And anytime he holds our baby the baby will start crying or wake up almost immediately. He’s not a bad dad. He loves his kids and they adore him. I just don’t think he can handle it. It’s stressing me out because I have to go back to work because we don’t have the money for me to be off any longer then 6 weeks. Anyone else in this situation?