Yeah, you will definitely have to wait until he is sleeping through the night to try using it to avoid pregnancy. Then when you decide you want to start ttc again, you'll already be a step ahead, and won't have to worry about your body adjusting from birth control.
In the meantime, I'm pretty sure that a low dose pill is your only option. I had the same problem. I have high blood platelet levels, so I wasn't able to take anything with Estrogen. (It's that ironic

) But, depo was just to hard on me. So, I went to a low dose pill. It was that or nothing!

So, I understand how frustrating it can be to be so limited in options.
If you guys want to wait for a little while longer for #2, then you should start using protection until the your pills are active again. How many days has it been since you stopped the last pack?