DS is nearly 6 weeks old. For last 4 nights I have been exp milk so that dh can give the last feed in a bottle so that I can go to bed early. I hate expressing but really want to continue giving one bottle a day as DS1 refused bottle. If we were to use formula instead of ebm would my milk supply be affected? Bf'ing is going fine all day & currently doing 1 or 2 night feeds.