Yes, you can do this if needed or unable to complete an activity, but have a chat to your DofE Leader first.
For help with changing your activities on eDofE, check out this article on the eDofE help pages.
Normally, you can just change your activity once per section of the award, but DofE have added more flexibility during the Coronavirus (Covid-19) pandemic. Read more about this in DofE’s information about temporary programme changes.
A lot of things have had to change during the coronavirus (Covid-19) pandemic. But, don’t worry, the DofE website has information about continuing your DofE and if you need new activities for your Volunteering, Physical or Skills sections, they've got some great activity ideas here.