No foods that you eat will not cause gas to the baby. Feed frequently as that will help to increase your milk supply. Laddoos etc are rich in ghee and sugar and best avoided. The ingredients that are there are fine such as gond lapsi dry fruits so if you can make this into a porridge and have instead that would be fine. Yes green leafy vegetables are good for you.

if colic avoid sepu,brinjal,potato etc have vegys leafy soup,garlic, oats, warm water, dryfruit laddoo, shatavari, use hing in food.avoid acidic n gastric foods

dal green leafy veggies and fat containg diet gud for babies