I have never had to do it but most wait till they are 12 weeks and have a plan. From what I have been ready on here is most take just a few weeks off and hubby takes mat leave to help. Do you have a back up care provider for the dr. Appts you will be going to or will parents have to fend for themselves? Will you be using your holiday time as your time off. Keeping in mind the more time you take off the greater chance of losing some or all of your families. Have your plan set before you tell parents so they know what's going on. Good luck