My kids were 4 months old approximately. When I could see breast milk was no longer enough, I started introducing solids

Ask your early childhood nurse

It depends on the baby. If your baby is showing signs, and can support their head, and have swallow reflexes, then start small and with the advice of RCH list etc.
Normally 4-6 months is a good time frame, however, some babies are slower at those reflexes so it may be 6-9 months.

6 months and when they can sit up without falling or sloping to the sides to prevent choking

Around 6 months, the Royal children’s hospital has a great little guide about what to feed when- you can grab it off their website

They need to be sitti g upright un supported and have good head control. 6 months is a rough guide but some 6 month olds also aren’t interested yet. Your hub will start staring you down when you eat and start making chewing like motions as you eat. They might reach out for your food too.

You can start with purees or baby lead Weaning style foods or a mix of both. My daughter wasn’t huge on actual food so she started by sucking the juices off of my pear cores. And she loved it!!

6 months onwards! Go nuts, try all kinds of food, safely prepared and correctly cut of course