I've based my own colony against Zero's, another Colorado anter, because we caught our queens in the same state, SUPER close to each other relatively speaking, around the same time. He provided them with everything they needed from the get go (Good steady supply of food, heating cable constantly on, proper formicarium) as opposed to me (Got a wild hair to attempt anting which ((I forgot about my current queen entirely)) and never fed them insects (till this year) and just would use.....stuff periodically. Every once in awhile I'd feed them. I would cycle my heating cable on/off about every....12 hours.
While my colony was surviving and getting by, they weren't thriving as well as they could have been. My numbers were... 1/3 - 1/4 of his for that initial ....5 months. Like Gold said, just start back up again and they'll come back just fine.