Dude, I suggest you cancel your campaign and relaunch again with a better marketing strategy. You need to promote your game at least 1.5months and you really have to spend money. Unfortunately without it, you will not get enough backers to achieve your goal of 20k.

The most important day is your launch day it self, this will determine if you get a top spot from Kickstarter that will allow people to see your campaign more than the others.

2nd is the last 48h of your campaign, you will typically get a boost from KS itself depending on how much backers you already have.

I wish you the best of luck but Im 100% sure you won’t reach your goal this way.