Can i go to sleep while I'm fasting?

I'm thinking about doing IF every other day because it would help my routine, i eat my last meal at 11am then go to an internship till 5pm and then to class till 22pm and arrive home at 23pm, that's 12 hours of fasting, but since i read that the minimum must be 16hs I was thinking about going to sleep and waking up at 7 to start eating again and go training on a fed state, that makes it 18 hours of fasting. I just don't know if going to sleep in a fasting state could do any harm? I'm mostly worried about muscle loss via /r/intermittentfasting https://ift.tt/2L5IOVJ https://ift.tt/eA8V8J