Has anyone TTC while breastfeeding?

Lauren • Christ Follower, Wifey, Puppy Mommy!
I have been trying to pump less at night in hopes of encouraging a cycle but if I wake up uncomfortable I usually give in and pump. LO has been refusing to nurse for a few weeks now because he prefers the bottle (I know how to prevent that with baby #2 after more research) so I'm just pumping. But I'm only 5mo PPD so I wasn't sure if anyone had successfully gotten pregnant on purpose this quickly. I know it's soon but we want 1&2 close in age and yes I'm aware of the risks and all that, I have a family full of medical professionals. Just wondering if not pumping between midnight and 5-6am worked for anyone. Thanks!