I treated my PPD without drugs, so I know it can be done! It took a long time though, probably longer than it would have with the drugs, but I am vehemently against them for me. I also had severe anxiety mixed with the depression.
Part of my deal turned out to be residual childhood issues (it really is all about my mother, aha) so I went to therapy, and have been going now for 10 months. It was/is really helpful and my therapist respected my decision not to take anti-depressants (so it is possible to find a therapist like this - I live in Cali though, but I think you do too? So you can prob. find one too.)
So my therapist worked on two things with me: first she taught me a few techniques for dealing with the anxiety attacks, like breathing and centering stuff, and she made a sort of list of things that would help, and second we then worked on my issues.
She said that one of the most important things, if you aren't going to take anti-depressants, is to get daily exercise, not like running 10 miles a day, but just getting outside, and biking or running or getting your heartrate up somehow, for like 30 mins or and hour or something. But it needs to be almost every day. Another thing is yoga. I swear the yoga is sometimes better than the therapy!! So I make myself go to yoga every week at least once, even if I don't feel like it.
She also talked about nutrition, which is supposedly easy for me, I'm vegetarian, we eat organic as much as possible, whole grains etc etc. but you know, when I am depressed and not liking myself I will start to eat like crap. Kind of subconsciously on purpose to punish myself or something. So just being mindful that wanting to eat crap probably means that I am slipping toward depression.
Oh and no coffee or other caffeine! Really bad for the anxiety. And lots and lots of water.
And go out on your own, I know it's hard, but it is really ok. My ds never had a bottle either, it gets easier when they can drink water or juice from a cup, you can go out for like 3-4 hours once in a while, especially once she is walking and talking more you will feel better about it. It's not that you don't want to be with your child or that you don't love your child, it's that you neeeeed to have your own space too and your child needs a not depressed mama. I'm not trying to be harsh here, this is what I wish someone had told me.
There's more, I'm sure, but I hope this will help you for a start.
Oh yeah, my ds is 28 months now; I had PPD/PPAnxiety for at least 18 months without help, and I feel like I've been not depressed for about 4-6 months now. So don't wait as long as me! I am seriously so much happier, and I enjoy my ds more. You know if they say that it takes up to a year to regulate your chemistry with anti-depressants, give yourself at least a few months to start feeling better without.
Auugh sorry so long, but this is a topic near to my heart