My first child I gave juice before giving food and I regret it. She had weight issues. I would honestly wait, unless needed for constipation, until they start eating real foods. That's what I did for my youngest and it has gone a lot better. But if you are going to give your child juice I would water it down. Also talk to her pediatrician. They can help give a good estimate of what's okay at 6 months.

At 3 months my doc recommended 1-2 oz of pear or apple juice if baby was constipated. I ask it if was ok to give her juice if she wasn’t and she it was fine to give 1:1 ratio of apple juice that being 1 oz for every month until 4oz. She’s been drinking juice since she was 3 months and at 6months doc told me it was ok to give my baby juice here and there and she’s been drinking about 5-6 oz a day since she’s been 6months and doc says it’s fine and most moms do it.

Only water.

Not that young but around 1 years of age I give my kids a little bit of cold pressed apple juice maybe like once a fortnight. Water is preferred in our household.

My daughter is 1 in 3 weeks and still doesnt drink juice. Just water