Cracked feet and hands: palmoplantar psoriasis - how best to manage?

Hi I recently started a biologic and am hopeful things will improve in due course. However, my hands and feet are really bad at the moment - especially my feet. They are really cracked and open, making it really painful to walk. I have spent a fortune on various bandages etc just so I can walk. I honestly thought there would be something out there for this given that it is so debilitating like special socks and dressings - but it appears to be just the run of the mill stuff like corn plasters (!) Has anyone found anything that has worked really well for them? thanks (first post)