Haven’t breastfed nor pumped 😭😭

Hi ladies.. My baby just turned 5 months.. I mixed fed the first 4 months .. I used to pump twice a day and he used to accept my breast if he’s not extremely hungry or by the end of the bottle feed I switch to breast .. but in the past almost 3 weeks I haven’t pumped I had covid and it was extremely bad I lost so much weight and had aching bones so I was extremely tired for 2 weeks! And now my breasts are soooooo soft and saggy !

Is there a way to bring my milk supply back?? Or it’s too late??

Please help I feel so bad and guilty 😭😭😭