low milk supply at night

During the day I have plenty of milk and pump extra. At night I feel like I'm not producing enough. Ex: just fed baby and the first 10 or so minutes are fine, then she swats at my breast, fusses, pulls off and relatches multiple times  (she usually eats about 15 mins per side and I have to pull her off to burp and switch sides etc) 
During the day I see milk in corners of her mouth as she feeds and when she pulls off there's milk dripping out etc. At night none of this happens and I think I'm putting her back to bed hungry?
Anyone have any advice?