How do we support loved ones with cancer in current lockdown

Firstly big thanks to everyone working on front line.

im just feeling very frustrated, that I can not help my mum (70) when my dad is going through chemo. (Stage 4) non Hodgkin Lymphoma 

I would love to help in some way....

I can’t go to visit, I can’t get shopping (Due to distance away & my husband on immune suspression drugs)  worst of all worried that my mum will relive my sister (42) chemo and her passing. 

I just want to hug and reassure them. 

Any words of wisdom ?