DS2 is 4 weeks old; DS1 is 2.6 years.
I hate the newborn phase. The broken nights, the constant feeding, getting not even a smile back from DS2, neglecting DS1 because DS2 screams anytime I put him down, the anxiety and constant worry that I'm not doing if Right (especially re not being able to get DS2 to settle himself to sleep or even put him down).
I felt just the same with DS1, only really lifting at around 6 months when he became a little person in his own right.
I long for the next year to pass. DP tells me I'm wrong to wish DS2's life away. But each day passes so slowly, even with DP giving DS2's late feed as a bottle of EBM so I can get some sleep.
I just hate this phase.... Sigh.