Earlier, the timeline was:

labor certification : 2 weeks - 3 months

I-140 approval: 2 months (Considering No RFE)

I-485 approval: 1 day - 2 weeks after I-140 is approved.

These days,

labor certification: 1 year - 15 months

I-140 approval: 6 months (Considering No RFE)

I-485 approval: 1 day - 2 weeks after I-140 is approved. (This is an arbitrary number for current conditions, might take longer)

I got my labor certification, I-140, I-485 done in 150 days of 'processing time' on EB2, but that was sometime ago.