Most babies progress through these stages at their own pace, and variation is completely normal. But there are a few situations that warrant a conversation with your pediatrician:
No progress after several weeks: If baby is still refusing all solid textures at 8-9 months with no improvement despite regular opportunities, mention it to your pediatrician.
Extreme gagging or vomiting at every meal: Some gagging is normal, especially early on. But if baby gags to the point of vomiting at most meals and this doesn't improve over 2-3 weeks, there may be an oral motor or sensory issue worth investigating.
Complete refusal of all solids past 7-8 months: Some babies start slowly, and that's fine. But persistent complete refusal may warrant evaluation — especially if combined with poor weight gain.
Difficulty with any texture other than smooth purees past 9 months: If baby can eat purees but refuses or gags on any lumpier texture well past 9 months, a feeding evaluation may be helpful.
In all of these situations, the appropriate response is a conversation with your pediatrician — not panic. Most feeding concerns resolve with time, exposure, and occasionally professional guidance from a feeding therapist.