PIP turnaround time during Covid lockdown?

What are the current timescales for processing PIP claims?

I understand there are no face-to-face interviews due to Covid. More or less, how long is it currently taking to get invited to a telephone interview and how soon are they occurring?

I understand timescale info is largely anecdotal but it is better than nothing.

I ask this because I wish to change my GP when it's clear he will not be contacted by the DWP for further info. My GP is sympthetic to my medical disabiities but he's no use when it comes to investigating them and I am becoming unwell again.

Thank you.