i sympathize with you. ds1 is high needs, nursed every 40-60 minutes day and night until he was over 1. ds2 sleeps a bit better, but not much. he isn't even calmed by the breast as well as ds1. i am constanly walking, bouncing, etc.
i have so much guilt that ds1 is eating worse, drinking too much juice, watching way too much tv, not getting out of pj's all day, only getting his teeth brushed most days, etc.
this is a hard adjustment!