I hope all is well and welcome to the forum.
I agree with @Singing_Gardener, your Dad should definitely consider joining a local group. If you’d like to explore this option for him you can look into local groups that are closest to his area here. If you need further assistance, you can also give our helpline a call on 0808 800 0303 and speak to one of our advisers about the options available to your dad.
I hope you find the above information useful, however, please feel free to ‘@’ with any questions.