ok so I have never had a high supply of breastmilk and im pretty much dried up but still have…

ok so I have never had a high supply of breastmilk and im pretty much dried up but still have some... my daughter who is 3 months wants boobie! she will scream when she is near them and try to get them... but she was only breastfed for like two weeks at first... well I let her have one to see what she would do and she latched right on and stayed latched for a good 15 minutes... is there any way to help get my supply up for her since she wants it so bad?