With new installation of packaged bees and the use of a frame feeder, does just sliding the top cover and inner cover only enough to check the feeder interfere with the bees activity? not pulling and checking frames. I don't want them to run out of food and not sure how quick they will eat it up.. also what if night time temps drop below freezing, how with affect the sugar mixture in the frame feeder? Thanks for the advice to a newbie..