I would just take a little time out yourself don’t try and get round at the same pace you normally would do,pick out the ones that you know will be more a less certain and be pleased you are cleaning them.
I would say a lot of people will understand you are self employed and need to carry on working till you are told you can’t,I’ve had people pay me a lot quicker than they normally would do with no followed up text saying put us back etc.
It’s the faceless companies who will suffer more 100s or 1000s on direct debit people will just cancel,some will say you don’t know what your on about blah blah blah,I reckon that’s the reality it’s in times like the present the personal touch is invaluable.