We took the opportunity in that initial phone call to explain a bit about the structure of the session and what to expect (without giving too much away in advance)!
Fe achubon ni ar y cyfle yn yr alwad ffôn gychwynnol i esbonio ychydig am strwythur y sesiwn a beth i’w ddisgwyl (heb ddatgelu gormod o flaen llaw!)