I recommend reading “The Wonder Weeks”, a book about different developmental phases infants go through - with some caveats. It has helped us immeasurably to und

I recommend reading “The Wonder Weeks”, a book about different developmental phases infants go through - with some caveats. It has helped us immeasurably to understand what their little minds and bodies are going through as they grow into their next developmental phase. Check it out, it’s worth a read and is based on scientific research, though not without controversy, so take it all with a grain of salt. Personally / anecdotally, we have found fussiness has lined up perfectly with the jumps in our first child, while it’s about two weeks early in our second child. https://en.wikipedia.org/wiki/The_Wonder_Weeks https://en.wikipedia.org/wiki/The_Wonder_Weeks