My baby will turned 6 months and I'm noticed my milk supply is really dropping? Help!!!

So I'm a home stay mom so im breastfeeding 24/7 .

my baby has been eating with the same frequency but my milk supply is dropping . I can feel it i can see the difference I could pump a bottle every day of 8 oz but now I'm lucky if I get ,2 oz.How can I build my milk supply again?