Hello. Your feeding is enough or not ,can  be assessed by number of times Urine passed and baby's weight gain. Definitely,  you can change powder formula as it's not suiting her. Continue breastfeeding every 2-3 hourly.

Continue breastfeeding

Continue Breast feeding 7 ml each breast on single feeding. Change the formula if baby is not tolerating.

Breast milk production js not uniform throughout the day; more milk is produced early in morning and just after you wake up from sleep Your age is not a matter of concern here, don’t worry about that Please stop the formula; let your baby suck on even if you think milk isn’t enough. Sucking helps to increase breast milk production in mother, it’s all feedback networking. If baby sucks more, mother’s brain will give signals to produce more milk. Start by following these steps 1. Stop stressing, trust your baby and your body 2. Eat nutritious food, more of garlic, ajwain, fenugreek in diet. Boiled egg is also great 3. Drink 2-3 liters of water a day, it’s better to drink warm water 4. Take your calcium and iron supplements

Continue feeding.