What age gap for children is best?

Tayla🌼 • Two daughters 🌸🌸 13month Gap. 👶🏼 👶🏼 👼 healing from loss 😭 at 11 weeks pregnant. NOW -🌈 👶🏼 on board

I know this is different for everyone but iv always though I wanted them really close in age ! What’s your thoughts? What’s it like having to close ? I’m talking like 13 monthish close