If you're parenting with a partner, the first year of parenthood can be challenging for you as a couple. For example, parenthood will undoubtably change your sex life. I'm sorry if this is news, but I have not met one couple whose hanky-panky has been unaffected by the introduction of a new baby. But there's hope! Yes, things will change, and, yes, maintaining a sensual spark will take effort, but this is something you can work at successfully, starting with erotic things you could do for a new mom.
Some of your old modes of wooing might be successful, sure, but I have to be honest: a new mom may not have the same inclinations and drives she once did. That's not to say they may not come back once she's feeling more comfortable in her new role as a parent, or that they'll evolve in a way that's, perhaps, even more exciting. I'm just saying this is a weird time that will take some creativity, exploration, and fresh ideas about what is truly an erotic experience.
Overall, I would advise new parents to be patient, be diligent, and try any of the following tried-and-true tactics to get some spice back in your life. The struggle is real, but the answers are often quite simple.