Hey all! I’m a FTM, my daughter was born on January 8th, she just turned 6 months yesterday but she’s not sitting up by herself yet. She still needs quite a bit of assistance. She’ll tripod sit for about 10 seconds before she just kinda folds herself in half. I have a Bumbo seat for her, but her little thighs are too chubby for it & it’s really uncomfortable for her so she doesn’t like it. Any tips/tricks for helping her strengthen her lumbar so she can start sitting up properly? I know babies do things at their own pace but I just want to help her get stronger is all.