Feeling a little low on my journey to Islam

Assalamu alaikum, and Eid Mubarak to all! Just need to share what's on my heart. This Ramadan, I fasted and learned so much about Islam, and I ended up taking my shahada alone-and I've never felt more at peace and alive. Alhamdulillah. I'm engaged to a Muslim man (and no, I didn't convert for him, of course), and when I told him I wanted to embrace Islam, his reaction was kinda... underwhelming? He said things like, "Don't rush into it, it's a lifestyle, not just a phase," "Make sure it's from your heart, not for me," and "Are you thinking about wearing hijab? There will be challenges." I get he wants me to think it through, but I've been reflecting on this for ages before I finally took that step. I also come from a Christian family, so they're not really in the picture for this part of my life. I talked to my dad though, and he's actually supportive. Maybe I'm being too sensitive, but it hurts that the person who first showed me this beautiful deen doesn't seem to believe it's truly in my heart... anyone else been through something similar?