Hii moms.. My son has completed 8 months today. He starts to sit with support of pillow at the end of six month old and now he sits in tripod position. He does sits properly and straight. He bend his back and take support from his Hans then he sit. He is 8 months and 2 days born baby. Other milestone are good. He can rollover from back to front front to back. He can rom in all over bed. Is there something to worry about