Michelle, I also do about 4 to 5 nights out of the week by myself. When Tyler was only a few months old, I just had to go with the flow. This is how we got in the pattern of late bedtime, late wake-up time.
We do the best we can when it is just us, you know.
Zach slept last night from 8:30 to almost 10:00 this morning :-0 Then he got tired around 4:00, but was fighting it. We went for a ride to get dinner and he slept for an hour. If he did not sleep that hour, he would be very cranky tonight.
I think I am just going to start quite time with me and him both from 2:00 to 4:00 (that is when Tyler naps). I need some down time also, so will be nice.