I do have distinct memories of pretty much plonking myself in front of the tv for the night and having bub sleep upright on my chest.
Me too!

One thing I've noticed is that sometimes babies have a feral phase It's almost as if someone has snuck into the house and swapped babies as they aren't the little one they were yesterday. After a day or two they get swapped back and all is calm again ROFL.

Just keep plugging away and whatever caused bub to be upset will probalby pass. If it doesn't then maybe it's a sign that something else is up. If you can, get your hands on a book called The Wonder Weeks. I found it to be a real eye opener in understanding why this kind of thing happens and helping me have the patience to ride it out the other side