Rivastigmine patches

My husband has recently been diagnosed with Parkinson’s Dementia. His neurologist has asked his GP to prescribe rivastigmine patches to see if they will help but we are having difficulty getting a prescription for them from our normally very good GP practice. I’m not sure if this just a mix-up or a known issue. Does anyone else use the patches? Has there been an issue as I know they are more expensive than the capsules? Our own GP appears to be away so I have contacted the practice pharmacy team asking for clarification.