Congratulations on the PhD and baby. All children at any stage baby-teenager has its own issues. Lots depends on your child's temprement. If you have a 'good' sleepy undanding baby (this happens I'm told lol) this can be the easiest age before the teething and terrible twos, threes, fours.... You get my drift. It'll be no harder than holding down a full time job with a baby. You need to find what works for you. Good luck x