I could definitely dial it back. I could do 2 volumes. I am just super nervous about exploding bottles. It's been in secondary for 4 months after 1 month in primary. I assume it's finished.
Good. After that much time it will be safe to bottle with priming sugar. 3 volumes is fine but personally I'd only do like 2.5. However the yeast is long gone so you will want to add a sprinkle of fresh yeast along with the priming sugar. Cheers!!
P.S. Also be aware that it can take a long time for cider to carbonate. It's not right away in 2 weeks like beer usually. Usually takes more like 2-3 months in my experience. I don't know why, it just does.