I won't start believing unless we can get through the next 4 games (West Ham, Forest, United, Chelsea) with max points, with Liverpool dropping another 2-3 points. Then we get Saka and Martinelli back and if it's a 2-3 point gap going into the final 9 games with us also going to Anfield... game on at that point.
I would be absolutely shaking with nerves if we came out of Anfield with the advantage and then had to face Newcastle again... But I'd rather have that problem than not.