Oh goodness, I'm in tears reading your post. I know a bit of what you're feeling.
I did find cosleeping tremendously helpful for bonding with my DD (oddly, I found it more helpful than BF). So, I think you've got the right idea by trying to make that work. If the difficulty is that she needs her own space, you could start by sidecarring her crib to your bed or by putting her little crib mattress next to your mattress.
Do you babywear with her? I really felt better when I was wearing DD, even for just 20-30 minutes at a time. And it will make it easier to run around with your 4 year old.
What I REALLY wish I had done when DD was little was hire a mother's helper. Maybe a high school or college student who could come over a few hours a week and just help me around the house--maybe someone to play with your 4 year old while you get some quality time with your DD (and you'd be right there if he needed you). I guess that's what extended family used to be for, but times have really changed for most of us.
I'm sure others will have fabulous suggestions for you.

I did find cosleeping tremendously helpful for bonding with my DD (oddly, I found it more helpful than BF). So, I think you've got the right idea by trying to make that work. If the difficulty is that she needs her own space, you could start by sidecarring her crib to your bed or by putting her little crib mattress next to your mattress.
Do you babywear with her? I really felt better when I was wearing DD, even for just 20-30 minutes at a time. And it will make it easier to run around with your 4 year old.
What I REALLY wish I had done when DD was little was hire a mother's helper. Maybe a high school or college student who could come over a few hours a week and just help me around the house--maybe someone to play with your 4 year old while you get some quality time with your DD (and you'd be right there if he needed you). I guess that's what extended family used to be for, but times have really changed for most of us.
I'm sure others will have fabulous suggestions for you.
