Inter Milan is not a weak team. My guess is that Inter Milan will be able to draw their home match and they will lose the away match. Liverpool is a strong team. They are playing for the title. But the important thing is that Liverpool's players are in good form now. In this situation, winning against Liverpool is challenging for any team.
I agree with your claim. Liverpool barely defeated Milan in the same place by 2-1. And if we look at the previous weeks, we can see that Inter have been performing at a higher level than Milan. In this critical round of the CL, I don't expect Inter to lose in the first game of the draw. I expect a score like 1-1 or 2-2. But there might be nothing to do for Inter in Anfield like you said also.
However, the Inter Milan team cannot be considered weak. The Liverpool team must play well and be aware. At the same time, if Liverpool's star players get injured, it will be more difficult for Liverpool to beat Inter Milan. Liverpool have a good chance of winning, but they must play well to win. Liverpool will lose points if they make a mistake on the field.