How do I move offices once I reject?

This is probably a dumb question, but if I do not move an office up, because I feel like I don’t have enough money yet, can I chose to move up at any time, if so how?

If you haven’t figured out by now, it will give you more chances later on. I can’t recall what triggers it, but I held off on my first office move 2-3 times to save money and subsequently moved at a good moment. But the game had to offer it up again. I’m not aware of a way to just select moving whenever you want sadly.