Considering trying for baby #2!

Hi! I have a beautiful 15 month old daughter and am thinking of trying for baby #2. I was looking for moms who have babies with 2-3 year age gaps as this would be the range we’d be falling in to. My husband works crazy hours, so while he helps where he can, I generally have my little one 20-21 hours of a day! I’m a little nervous about it, I think that’s probably normal. I worry about being overwhelmed or not having enough time for my sweet first born? In your opinion is this a good age gap, pros/cons? Any advice you think might be helpful to this mama in making a decision is appreciated! 🙂