I think it’s worth going to a lawyer, as they will be able to pick up potential problems you might not even realise exist. It is also probably even more important to organise power of attorney documentation, so that if you are incapacitated you have someone who can make medical and financial decisions. A lawyer will be able to go through all of that with you and make sure you have the right combination of things in place.

The other thing you should do if you haven’t already is make sure you and your partner have full access and understanding of things like how to pay the bills and who insurance is through etc. - it is quite common for one person to take the lead on organising that, and for the other person to struggle if something happens and they have to take over. Especially when things are done electronically and there is no filing cabinet of documents you can go through.