Funny enough mine did last night and he’s always slept through the night. Someone told me it could also be night terrors at their age
Could it be teething? My daughter’s sleep really improved in the last few months but recently she’s been up in the night and it coincided with one of the back molars cutting through
Same boat here… Started sleeping through the night after his second birthday when he dropped his nap. Been great for months, & now we’re back to waking up 4-6 times a night… 😴