As a fellow Grokker user (definitely not a medical expert), I would recommend that you watch any Sarah Kusch video, and at the end, when you are prompted to give feedback, ask her your question. Sarah Kusch has a pretty good track record for answering questions - and she's a mom who recorded many prenatal fitness videos for Grokker and who therefore likely has good tips about postnatal fitness. You might also enjoy this Grokker program: https://grokker.com/fitness/abs-and-core/program/4-week-core-program-with-sam-skelton/57571803cc5f6ce437c5bb75. And you might enjoy pilates, too: https://grokker.com/fitness/collection/pilates-traditional-and-modern-fusion/605edf53c1a5914c330396b3. Best wishes! :)