I need advice my little girl is ten months old and physically very lazy. Intellectually she's surpassing the developmental guidelines but is really struggling with meeting her physical milestones. She started sitting up unaided at 8 months but doesn't crawl or stand up. She hates tummy time and can hold herself up on her arms but becomes quickly distressed and gives up. We've tried getting her to stand which is also fruitless, she can do it if I hold onto her legs to keep them on the ground but has no desire to do it unaided or whilst holding onto something. Is this normal? Is she just lazy? Please help.