I could tell he wanted to get off the phone quickly
Do something totally opposite on what he expects. If you call him for help with something, say thank you and get off the phone as soon as you can. He will expect you to ramble on. It will get him thinking.
If he calls you for something...either let it go to voicemail and call him back at a later time (also makes him think) or answer his question and say you have to go.
