Uy, I understand the worry, mama, six months na talaga and hindi pa siya kaya mag-stand, nakaka-stress talaga! Pero bawat baby talaga ang sariling pace, kaya try mo lang i-observe pa if may progress kahit maliit lang, at better if you bring it up sa pedia mo sa next check-up para ma-assess niya properly kung okay lang ba or may kailangan ma-address. In the meantime, tayo-tayo lang siya gently during tummy time and play, para ma-strengthen ang legs nya, you're doing great by noticing these things, mama, kaya don't lose hope!