Pumping output down

esd

I know they say pumping output doesn't reflect supply because baby is more efficient but I'm still stressing. I posted below how DS is fussier when nursing and it's taking feeding him on both sides now to be satisfied.
Now at work I've pumped twice and have only gotten 5 1/2 total. I need 16 oz for DS tomorrow so I'm short. I still have 2 more pumping sessions but I'm thinking I'll still come up short.
Just venting. Any words of encouragement would be appreciated.