Overwhelmed!!!

I'd suggest deciding what things are your biggest priorities and what are less important. Like maybe just focus on your grades at first until you get a routine going. Maybe take a break from babysitting if you can, and I'm sure your friends would be willing to help you out with running your book club while you're overwhelmed. Also, sometimes writing books can be a major time suck so (unless you aren't doing them for fun as I'm just assuming) I might lay off of doing too much writing until you feel more on top of your life. What I do sometimes when I don't have the time to write but don't want to forget my ideas is just jot down some notes on whatever it is I want to include in my story on a word document or a notebook so that I have a little refresher of the ideas I came up with when I have more time to dedicate to writing. Hope this helped, good luck with everything! :)