Many new parents always go through some depression when their first kid is just born, the life changes are drastic and sacrifices have to be made. My wife got hit with more of this than me, so I took a couple of years off of work to take care of our (then) baby so she could go back to work earlier (she just moved to the USA and was unemployed, and I just got laid off from YCR, so we got to make a choice). Always got to look out for the mental health of your partner, and judging isn’t very useful.