Should I pump before bed?

My baby is almost 5 months. And hasn't started any solids yet. She goes to bed at 7, and I nurse her right before. Since I don't go to bed til 10 or 10:30, i had been pumping before bed.

In the past few weeks I notice I don't feel full before bed and if I pump I don't get much ( just an ounce total sometimes).

So I've stopped pumping at night and I'm wondering if this will hurt my supply? I'm just confused. I should only need to pump at the times my baby would eat(if I'm away from her) right?

It all seems different from nursing her at 3 months. Even though I wasnt back to work I still pumped 1-2 times a day. Maybe it's just that I'm sick of pumping so I'm more lax if I go a lot longer between... any comments or experiences on the matter if you're still nursing? Especially those of you who work and have to pump there.