I did exactly what you are doing for the exact same reasons. Four hour shifts are hairy but it can be done. FWIW 3-7 is a better four hour portion but I dont know if that is an option for you. 7p-11 is heavy because at least at our hospital you have to pick up another pt at 7p, plus you have night meds, the second of the BID dressing changes, TPN (though you may not have this if the patients arent that sick) and you have to address all the issues that magically appear once pt's visitors leave
etc. You will run your heiney off, you wont have time to chat with coworkers about the baby etc. You seriously go in there with your skates on! I usually am writing meds down, checking vitals, new orders and skimming the last progress note as I wait for report. I do my assessment for all patients, then put in calls to docs at the same time. I try to get a bit of charting done. I get night meds together and then pass meds and proceed with new orders. After meds/ dressing changes are done I get caught up on charting. Then voila ..your shift is over...its crazy, you feel like you just got there. The nice thing about my facility is they have a policy that four hour shifts do not get admissions (doesnt always happen but I was sure to keep that policy handy in case I deemed the assignment unfair.) Some days are just crazy and I dont mind doing what I can to pitch in, ya know. Even though the four hour shifts were crazy, it was nice to have the adult interaction.
BTW--Yay to you for breastfeeding this long.