So my 7 month old seems a little behind on some milestones. She doesn’t put any weight on her legs, when she’s in her exersaucer she just lets her legs dangle behind her and when you lift her onto her feet she doesn’t even try to stand. Is that concerning? She also hasn’t tried nor has any interest in crawling. She can sit for about 30 seconds on her own tho and she’s eating solids and meeting every other milestone.