It matters not how long you leave it lapsed. (The 3 year thing went away some time ago)
You seek out the head of training at an ATO or an RF who assesses how much refresher training you need, as a minimum, before the LPC. It's now around 8 months since you flew. Unless you're exceptional you would have got rusty at least and may need more than that minimum.
Feel free to PM me if you need further advice.