Help with Tu Bishvat

Long story short, my family is poor, growing older quickly, and ill. I work extra hours to maintain their health, but unfortunately that means I have to work during Tu Bishvat, which isn’t permitted. What mitzvot can I do to make up for this? Is there a service I can help with or donate to that plants trees for Tu Bishvat?

Edit: Going to have to ask my savta why she expressed work was not permitted on B’Shvat because that’s how I was taught and now I’m confused why she said that