I feel like for me things stay about the same level of difficulty then we have big leaps and things get easier. For us so far:

6 weeks- she started smiling and it made the hard stuff a lot more fun

8 weeks- started napping in her crib and sleeping well enough at night that I'd put her to bed and stay up an extra hour. Hello free time!

6 months- some of our eating issues started to resolve quickly and she moved to 4 pretty stress-free bottles per day. Also moved from 4 naps to 3 and I feel like suddenly my whole entire day doesn't revolve (as much) around a strict eating and sleeping routine.