When to try for #3?

I am doing natural family planning (NFP) so in theory it could happen anytime, but I’m trying to hold off until at least November (18 months after my last C-Section).

My 1st boy - 2.5 yrs old (will be 3 in Oct.)

My 2nd boy - 10.5 months old (will be 1 in May)

Hoping for a girl next! Would love opinions from moms of 3+ kids on ideal spacing! Life seems soooo hectic right now but the baby fever is starting up again …. 😅