We don't have those in the C of E.
One of the problems we had with a long term warden was that he did a huge amount including stuff that wasn't in the warden's area of responsibility. This made it really hard to get someone to take on the role as it had got too big.
There are books out there to help you and I know that my PCC secretary would quote the Behren's book a lot as they tried to get to grips with what was a CW job and what wasn't.
What you could do is sit down with the standing committee - this is the only committee you have to have and look at what needs doing and then think though who is going to do it. Part of the art of CW is delegation.
Find the terrier and inventory. Is it up to date? It will really help the new incumbent if it is Find someone good at admin and fine detail and get them to update it if necessary. How are records kept? Is this a good opportunity to ditch what you don't need to keep?
Does the parish have a H and S policy? If not ask one of your neighbouring churches to help or the area dean or the archdeacon's office. Are their risk assessments for things that will be going on in church in the interregnum? If you don't have any they get something on paper. What is the risk, who could be hurt and what are you going to do to mitigate that risk.
What are your cash handling policies? There is guidance on the charity commission website.
I've had all of this issues in churches where governance had stalled back in the 1990s. You may have all or none of them.
Good luck!