It's likely that even 3 wins will be enough for the title, especially if we win on Sunday.
But 'likely' is the key word. Extremely unlikely things happen, especially in a strange season like this. When we drew with WBA, virtually everyone including the most optimistic fans didn't expect that we were going to win 20 odd games in a row and only a crazy fan would hope for 4 consecutive home losses for Liverpool.
It's about probabilities and probabilities may fluctuate widely. Covid, injuries, extraordinary events, etc. may change the probabilities dramatically. It's not a normal season. So, I don't really care whether we need 3 or 5 or 7 wins. All that matters is the title. Would be nice to win it earlier so that a group of say 15 players is in top condition for the key cup games.