My husband helps with our child a lot....for approximately 30 minutes a day. Lolol. To be fair, he takes care of all the outside stuff (lawn mowing, landscaping, gardening, scheduling car repairs he can’t do himself, oil changes, etc), and even inside stuff to a degree (he unloads and loads the dishwasher while I bathe the baby. But when it comes to direct parenting, it’s either all me or both of us (but still mostly me). I don’t think you’ll be able to motivate your husband. He will need to find that motivation himself. Good luck.
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