Any tips for mummies who are looking to transition back to work? How do you transition smoothly from maternity leave?

It is going to be hard but just power through it. Focus on your work to the best of your abilities and look forward to going home. Most moms I know say that their time management skills at work have improved a lot after maternity leave because they work efficiently as they want to be home on time to be with their kids and not have to bring work home on weekends.