The letter explained that the couple were attempting the “cry-it-out method”. The “tired and sorry” mum apologised in advance for the crying everyone would likely hear, even inviting them to pop in for “milk, sugar, eggs or tequila” if they should need it, reports The Mirror.
The note read: “Apartment 207 here. I regret to inform you that we have begun sleep training our son.
“After many sleepless nights thanks to the dreaded 4-month sleep regression ... Read even more
