Can I use my health savings account to reimburse myself for lost wages incurred when staying with my child who is in the hospital?

My child is in the hospital fairly frequently for complications with his body (I.e. airway, gi tract, and feeding tube). Often requiring extended stays in the hospital in the nicu. My company allows me FMLA to take care of him, but the way we accrue paid time off is bi- weekly instead of a lump sum. This is causing severe financial hardship on the family as we only have my income and his disability payments coming in. So trying to find a way to use my HSA to help balance the load.