Feelings of self doubt

I rang my son (who lives alone)to suggest he get his portable
toilet from his caravan for downstairs during his colonoscopy prep. He thanked me for the suggestion. Sort phone call as he was driving.

My other son overheard and told me son number one did not want my advice and that my phone call was unnecessary. So I began to doubt that I ought not to have rung and that I can't trust myself to say the right things.