It will drop leaves from coming in but if it is in a sunny window will find an equilibrium. I still find I water mine inside more than I would think but do let them run drier than outside. I would suggest letting it dry to slight wilt then water it well and see how long it takes to go to slight wilt again this will give you a ballpark to work with. The biggie I see is that with more cloudy days (here) in the winter I can't use a schedule but just have to check them every few days and if the pot is light then I water if not I wait a day and then check again. It takes some trail and error but is IMHO the best way to know that you are not over-watering your hib. In almost every case it will come back from a little too dry better than being kept a little too wet. Some folks like to mist their hibs for humidity other put them in the shower a few times throughout the winter. These are just some of the things to consider when caring for your baby this winter.
Good Luck and Happy Growing David
P.S. I have four inside right now and they have gone nuts with blooms again. It started some freezes here about a month ago and I have had them in more than out since then. But they do get several hours of direct morning sun if it is not foggy or cloudy during that time period.