when to move to stage 2 baby food

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So I did the whole wait til 6m until you start solid thing. It's now been 1m since we have.. he had issues in the beginning w it but now is eating 2x a day.. about 2oz each time. He is now doing great w stage 1 only. What's the next step.. I gave him stage 2 tonight.. but is he ready? .. he ate it just fine.. but how do u know when to move up a stage and when to start giving 3x a day. He still is exclusively breast fed..FTM here