Hi!!
I'm a student too so I understand the pressure!!! (((Hug)))
Try not to panic, you're thinking too far ahead and about too many things at once, try grabbing a tea, watch something easy and amusing ( I suggest louis ck comedy stand up on youtube)
then settle in to do a little homework, but don't fret about it, just methodically focus on the work and do a little at a time, don't think about funding, the lease etc.
If you do think about, immediately start thinking about something positive, keep doing this :-)
I hope this helps, its what I do.
I start thinking about school, work, getting new clients; then what if I don't get new clients?- I can't pay tuition then,
my car is going to break soon and I don't have enough for a new one, then I can't work or pay tuition, I'll fail uni......on and on.
I know how you feel xo