Everything, all at once!

I am honestly at my limit right now.

Our 16 month old seems to have everything hitting at once. Teething, a cold, the time change, longer daylight, sleep regression or autonomy phase or whatever this is. For the last few days he has been completely all over the place emotionally. One moment he is fine, the next he is crying like his world is ending.

He points somewhere because he wants to go there, then cries when we take him there. He wants me, then cries because he wants mom. He wants mom, then cries because he wants me. This can go on for hours. Nothing really settles him. The only thing that helped the last two nights was driving around in the car until he finally fell asleep.

My wife and I are both completely exhausted. We have been awake until 3 or 4 in the morning, barely sleeping at all. I already had to call in sick this week because I am so destroyed. My wife is just as drained. Now he is sick on top of everything else, so it feels even worse.

I know he is not doing this on purpose and I know he is probably overwhelmed too, but I am running on 3 to 4 hours of sleep and I feel like I am falling apart. I do not even know how I am supposed to function at work again in two days.

Did anyone else have a phase like this around 16 months where it was just absolute chaos all at once? How did you survive it?