Sounds pretty normal to me, DD is like this when she goes through a growth spurt. Temperature can have an impact as well so if it is warm bub may suck more as he is thirsty, even in air con as that is very drying as well despite the cooler temp itms.

some of it could be comfort as well, but rest assured it will settle but only until the next growth spurt or hot days etc.

your doing great hun, its hard work sometimes but its so worth every effort.

Nae x