I just deposited for the bonus today and played a little 5-max $1/$2 limit holdem.
According to PokerTracker, the 80 games generated $41.45 in total rake. $41.45 / $0.10 = 414.5 * 0.07 pts = 29.015 pts. $20.50 of the rake was from pots I did not contribute to at all.
According to Eurobet's cashier, I was credited with 28.98 pts so it appears that the requirement is just to be dealt cards -- you don't need to contribute to the pot.
This was a little under 1 table hour which earned about 0.5% of the required points, so extrapolating this (very small) data set, you get about 200 tables hours at 5-max $1/$2 limit. Four tabling reduces this to 50 real hours so this should be very doable in 90 days.
Edit 1:
Looks like my estimate on the small data set may even be high for the time to clear. According the the BW
bonus grid, the 10x bonus should clear about $4 per table hour short handed so 150 table hours total. 3-tabling would be 50 real hours, 4-tabling would drop it to under 40 hours.
Dave