Some great advice above. Couple of observations and advice given that I have recently gone through this process.
- Seek advice
- When asked if they would like to make the decision based on information they currently have on you. If you are in receipt of PIP and nothing has changed this maybe acceptable. However, if you are currently in receipt of DLA. I suggest you consider declining and complete a new full application. As stated by others DLA differs from PIP in that it is based on how it affects your daily life not the actual illness(es).
- During the call make a Data Subject Access Request (DSAR) for all information that the DWP hold on you. There will be information which you can use to inform answers to some of the questions and add as supporting evidence in your claim. Historic medical evidence etc. This is free. They should provide the information within the prescribed time limit for DSAR requests. If they do not provide the information ask for an extension on the time limit to submit the form due to the information not yet being provided.
- Finally seek support and advice!