Im so sorry. Sleep deprivation is awful!
i bed shared with my kiddos. BF them into toddlerhood, but stopped night feeding at around 18 months.
here’s how I managed it.
big supper, like porridge.
BF them before sleep and reminded them no more milk until it’s morning.
drinkie cup of water to offer every time they woke
when they woke I said no milk at nighttime and offered drink of water. Every single time!
slept in a high necked tshirt tucked securely into pj bottoms. no access!
they were initially furious, the water cup got thrown across the room a few times.
kept reminding them. No milk at nighttime, time for sleep.
It was rough for a few nights, but I was determined not to give in- as this would make all the upset pointless and confusing for them.
in the morning at a sensible hour (anytime from 5) when they woke we got up straight away, went downstairs- didn’t feed them in bed as wanted that association of waking and feeding to end. Made a big deal of it being morning when they woke , yay up time! Sometimes they wanted to BF as soon as we went downstairs, sometimes they wanted brekkie first.
worked great for both. Few awful nights then they started sleeping through, or just waking for a quick drink and cuddle then back to sleep.
mine kept BF in the daytime for a fair while after this, so doesn’t need to spell the end of breastfeeding if you don’t want it to.