>>559376091 star Entei - Master 09 + 043.7m DP
2 star Entei - Master 13 + 122.8m DP
3 star Entei - Master 19 + 262.4m DP
You need 437k strength mininum to get 1 star Entei, and 1.23m strength minimum for 2 star.
Tonight however with the 1.5x DP multiplier, the strength requirement will only be 818.6k.
If you've managed to get 1.75m strength by tonight, you have enough strength for 3 star Entei, but you probably don't have the required Master 19 rank. I can't remember if incense bypasses the rank requirement here though.
Your best bet of getting 3 star Entei is the 1.5x DP multiplier we're getting on the second Sunday, that's strictly if you can hit the lofty 2.6m strength target for Master 19.