Double the last week's score and you get +1 point

Are you still grinding? I feel like I've been stuck here for 4-5 days, and I can't seem to catch up. Even grinding for 15 points a day isn't enough, because points are deducted every day. For example, I gained 15 points yesterday, but I still had to deduct points from the day before. Isn't this just staying in place? Plus, the losses from grinding are too high; I grinded 16,000 yesterday in B2 and lost 10 units. If it continues like this, wouldn't I lose 150 units in 15 days? If one airdrop doesn't cover 150, wouldn't that be a huge loss?