First six months my daughter was on breastfeeding only and after six months I started liquid food. please advise what I can give in liquid form.

It will be good not to feed baby too much cereal as they contains quite a huge amount of sugar. If you want, healthy times will be a great option but feed sparingly. They are available at most supermarkets under baby or health department. As for puree, you can follow the chart attached. Golden rule of feeding babies food is that you must introduce every new food for 4 days to ensure that there is no allergies. Do note that you should introduce food one by one so that you can track which food is the allergen. Baby should start of with one meal per day and in small amount. This is not to substitute away their milk feed but to let them try and to test for allergies.