Torn about wanting another....

My daughter is 11 months old & ever since she’s been born I’ve wanted another baby... but recently we have started discussing TTC & all of a sudden the thought of having another kind of makes me sad. I have always envisioned having a large family & I know I want my kids close in age, but the thought of having another baby to love makes me sad because my daughter won’t be getting all of my attention anymore. Has anyone else experienced this? 😟