Average age for babies with DS to sit is 11 months. Even many months longer than this would still be considered to be OK for our kids. Your Grandson is lucky to have a grandmother who is so interested and keen to learn.
Mum to Brendan 15, Chiara 14, Kiernan 12, Aidan 10, Lachlan 9, Gianna 7 (DS) and Sienna 5.
"This then is what Yahweh asks of you: to act justly, to love tenderly and to walk humbly with your God."