BL, you are a very wise Grandma to bite your tongue, especially with a DIL 
It would be difficult to force a child to breastfeed, so your GS may just get tired over this over the next few months. He may still want the comfort of a bedtime feed, or when he's poorly, but I bet he soon won't want his play interrupted.

It would be difficult to force a child to breastfeed, so your GS may just get tired over this over the next few months. He may still want the comfort of a bedtime feed, or when he's poorly, but I bet he soon won't want his play interrupted.
Comment