You can keep trying. Babies change their feeding pattern throughout the first year. They could be interested sometimes and sometimes they might not be interested. But you have to keep giving it to your child. You can also try another formula milk brand which your child could be more interested in.

Hi it should be used within 30 mins

May cause infection,if everything normal don't worry,but don't do it for the next time...

Formula milk can be kept for only 20-30 mins after mixing at room temperature...after that you need to discard it...

Babies will drink a lot of milk in the first few months. They will feed every one to two hours. And this is completely normal. Once they don't want to drink anymore then they will not drink.

If the formula milk is prepared and your baby doesn't consume it, it cannot be stored and should be thrown. If it is prepared and immediately put in the fridge then it can be kept for about 24 hours.

It has to be Luke warm.

Yes you can give pediasure with milk. The basic ingredients will be the same of both the pediasure.

Hi latch baby frequently to the breast so that baby can suck and will increase the supply of milk as in response to sucking of baby breastmilk increases as its a reflex action and take lots of fluids in the diet and avoid caffeine and junk food both and take lactonic granules twice a day in milk

If you are breastfeeding continue with that till one year...along with foods ...
Or
Consult once with your Paediatrician regarding formula milk,they will suggest you the best one which suits to your baby....

Hi yes you can give formula milk and semisolid food both along with breastmilk