Okay so my 15 month old started sleeping through the night decently at around 13 month but the past two weeks that has stopped . He wakes up once every night screaming but last night was absolutely terrible . He woke up 6 different times and every time we got him back to sleep and laid him back down he instantly started screaming again . I have no clue what's going on . He's not sick and I really don't think he's be getting night terrors that much . Anyone else go through this ? Also just throwing this out there he is an extremely fussy toddler . He was a colicky and fussy baby and it doesn't feel like a whole lot has changed . He also throws so many temper tantrums which I thought it was too early for that being that he's barely turning 15 months old yet .Any advice or opinions would be great !