hi, this was going to be in AIBU because i was so ANNOYED but have calmed down a bit now! DS is 8 weeks and has colic which is a nightmare. The only way i can get anything done is to carry him in a ring sling which he loves - more often than not he goes straight to sleep. i carry him in a tummy to tummy hold with his feet tucked in. A couple of times my MIL has commented that his feet look a bit squashed at the bottom of the sling, but i usually point out that he's fast asleep and obviously not in any pain/distress.
Yesterday when i took him out of the sling his feet were a bit red and she told me not to use it again because it would damage his feet. She basically 'banned' me from using it! i have never heard of it doing any harm and am certainly not going to stop using it as i'm the one who has to suffer otherwise. Besides which i'm not going to be dictated to about how to raise my son! we live with her, which complicates things, but i have a lovely DH who always backs me up. but i need to make sure i;m right, o/w if he does get foot problems later i'll get the blame - not found any evidence googling tho.