For example, I am currently on position 2 of the supply track with gives the 3,2,2 limit for armies. Can I have a 2,2,2 armies for this instance or should the 3,2,2 be strictly followed?
question
You can have 2,2,2 armies, supply track limits only maximal number of armies and amount of troops in each
"These flags illustrate the number of different armies, and the
maximum number of units in each such army, that a House may
field on the game board."
The key word here is MAXIMUM. You may have armies with a smaller number of units. 2,2,2 is okay.