Ok ladies on maternity leave...do any of your partners help with the night??

I've asked for help one night a week, either Friday or Saturday night and I do the other nights. I breastfeed so it's only nappy changes I need, its not working out though as he doesn't / can't / won't wake up. I will be truthful and say how hard he works and how great he is with the baby..but i'm exhausted too. How have you arranged the nights? Thanks x