Decided to increase my seroquel xr slowly up to 600mg. I take it at bedtime he said it would help me sleep better ( it doesn't) but that neither here nor there at this point. So I've been on 300mg then when to 400mg and tonight I jump it up to 500mg. My question is so I take it at night is it normal by the next afternoon to feel like I'm crashing? He didn't change any of my other meds just the seroquel xr