16 months and fake crying

Lord give me strength. This child is fake crying with fake screams. He does it hoping to get his way. I’m ready to break at this point because it’s so annoying!!! He’s so stubborn he literally was awake from 12:30 am til 4:45am fake crying unless he got to play. I caved at 4:15 and let him play for a few minutes then he screamed and slapped me until 4:45 when he finally passed out.

Where has my sweet baby gone!?!? This all just started the end of last week. How long will this last? Will I make it out alive or before I go full meltdown Britney?