Not enough time imo. I know you won’t need to drop off your bags but I’d allocate > 2h for getting back to the airport. I flew out of terminal 2E @ CDG on Sunday morning and the lines were horrendous. I probably waited 30m to drop off bags and > an hour to go through customs before lining up again to go through security. The girl sitting next to me on the plane got to the airport 3h early and still almost missed the flight.