This doesn't make any sense, price will not decrease if you won't use bitcoin to buy something. Most of the merchants who accept bitcoin as payment method will just sell whatever bitcoin they will receive instantly to not get affected by price volatility.

If everybody will hold their coins tightly than it will limit circulating supply of coin which will pump the price. Currently many people are selling their coins out of panic when they will start to buy again than price will surge.

Nobody can give you exact date at which price will start to increase...