First time mum - SMA milk

My little girl was taken SMA First Infant milk until 5months. She took 7oz every 3-4 hours. I've now put her on SMA 6+ months as she's 7 months now. I put her on this when she was 6 months. It says on the tin too give 6oz only! That how much oz you can only give from this milk? This milk stronger?