The reigning champions are currently second in the championship table behind England, who are the only unbeaten side in the tournament.
The assistant coach told reporters: "The main focus for us is to win our games, starting against Scotland, which we know is going to very tough.
"There is no thought or mention of England a week later. When that comes around it will bring enough pressures with it. Our focus is on Scotland and about doing a job there.
"[Scotland] are the same as us, two wins out of three, and it is a home game for them. They will fancy their chances against us and then to go to Paris on the final day with a chance of maybe them winning the championship."
Jenkins was capped 87 times for Wales during his playing career.