gaviscom help

WE've just been giving cole gaviscom at night but we are gonna up his dose to morning bottle too. Is it ok to put the gaviscom powder in the water at night and leave it till the early hours when he wakes and we normally add the milk powder and feed him.

I have no idea and it hasn't been a problem before as he's been ok with just gaviscom in the bedtime bottle.

Also - has anyone used gaviscom with cows milk?? Can you jsut warm it up and dump the gaviscom in? Hoping to start giving him cows milk at night soon

Thanks