DH and I are planning to start TTC #2 either late Dec/early Jan- when our boy will be 10-11 months. Main reason being, DS #1 was born in the middle of Feb, so I spent the last trimester in the harsh Aussie heat- was very unpleasant.
I'm determined to conceive #2 this coming summer, carry it over winter and have it in spring- like the animals do!! Lol- that way, the weather gets colder as you get bigger (hence the extra padding is welcome), then bub arrives the same time as the sun in spring, leaving a few months to slim down in time for the hot aussie summer again!
That's my plan anyway- although the universe may have other plans for me.... I am still breastfeeding so I don't know how much that will compromise my chances.
Having said that, DS has been sleeping through the night consistently for 3 months now, and I am finding motherhood very cruisey at this stage, so I feel ready to take on another addition. Pregnancy is very taxing on the body, especially if you are breastfeeding- so you will want to make sure you are not still getting up a few times during the night as this will wear the pants out of you- just my opinion, of course!
If you do decide to get pregnant soon- at least you will have 9 months to enjoy your #1 before #2 arrives. I think whenever you feel confident, ready and somewhat rested!!