Andorra had lost 4/5 games by 7-0 score lines, the one they didn't was 4-0 to the Swiss. After that the last two games they have been competitive, losing 2-1 to Moldova and 3-0 to Poland.
The big question here is will the Swiss put up 7 or more at home? If you look at common opponents, Holland beat Andorra 7-0 and the Swiss 4-0, so from that, Andorra should keep this within 6.5 goals.
The Swiss last 5 games have been unimpressive, scoring:0,0,1,0,1 in that stretch. It is hard to make a case for the Swiss blowing out Andorra here with their recent form. GL