Updating my PGP key on TPO infrastructure

I need some advice on what to do here. The PGP key I have currently attached to my TPO identity is created in 2009 and I would really like to retire it once it expire in August.

Because of COVID-19, I haven't managed to run into any TPO people and thus my new key remains unsigned by any other members of TPO. I have, however, signed my new key with the old key.

Would that be okay to switch to? Or would you prefer I bump the expiry date on my old?