DS has been on Hungry Baby since just under a month old, it was going fantastically until Aptamil places a little card in the formula box saying that the formula texture & apperance had changed but 'don't worry, it's still the same'. 
He is now (we started the new tub yesterday) getting hungry every 2 hours during the day (remains to be seen if it changes his night pattern) instead of every 4...he's just like he was on stage one at 2weeks old!
Just wondering if anyone can help answer my questions/tell me that's it's normal & all 6mnths do this or if it's worth swapping over to other hungry baby formulas?
DS has baby museli with his 'breakfast' bottle & pureed veg with his 'lunch' bottle, does he need more food less milk?
He has just started crawling/moving alot more...could he just be burning more cals & therefore needs more food?
It's not been warm so he hasn't had his between meals water for about 3 weeks now, should I try & tide him over on water?
Anything else I could try to get him going longer between meals?
TIA