I sat Munch in her highchair and decided as long as she was upright and wasn't likely to keel over and choke she could be fed. She was padded in her chair until she was about 7 months as she has a dainty butt (unlike her mother) and it used to clide on the plastic seat... Also she had a cushion behind her for when she randomly decided to throw herself backwards until she was well into 8 months...so.... I reckon sit her in it and keep a wary eye, if she looks comfy, her neck and her back are straight then I would say she is okay....