Welcome to the BFTTC board. I dont have any advice for you as I still haven't gotten my first postpartum AF....and my baby is almost 11 months (in two days)....so yeah...I'm enjoying the AF break...it's been great!
Some women get AF back when they start their baby on solids. Which you'll be doing in a couple of months and that would be great timing....but not all women DO start AF right away...with each person and each baby it's so different what you end up experiencing.
Some of the others might have a great way to encourage AF to return though....I just know that starting solids and sleeping through the night are the most common.
Good Luck and welcome, again!