180days is TOOOOOO conservative!
It is full of risks in this world. You, of course, can elect to assure your life 100% close to what you desired. You can pay 2000% effort to reduce the risk. The problem is whether it deserves. If you enjoy your current job, why donot you stay longer? It does not cost you that much. Otherwise, a much shorter time is also all right. Donot scare yourself too much.
This discussion has lasted for a long time in this forum. I still can not see any persuasive evidence from the conservative side.