Supply tips?

Sarah

So I’m 4 days PP, and my supply has been frustrating to say the least. I went from pumping 4ml at a time, to yesterday pumping 20ml... this morning I woke up with my boobs 3 times their normal size, and literally squirting milk out. But I’m still not getting enough for a full feeding for her. She’s always still hungry and I’ve been supplementing with formula. Any tips?

I’m pumping every 3-4 hours for 15 mins on each boob.