Note: In reality, you don't have to wait for this overnight. Within an hour or two of refrigeration, it's ready to eat and enjoy. The Chia seeds I used are black seeds and the make is Bob's Red Mill. Apparently one has to be careful which brand one buys.
In addition, you can play with this recipe. The reason being even for me, this recipe is a recipe in progress. I think actually you can use only 2 tbsp Chia seeds...see if you prefer that...chances are the end product will be softer as all the seeds will swell with the moisture. Or, you could simply add 2/3 cup almond milk instead of 1/2 cup...things like that! You will find your perfect sweet spot for this rather interesting recipe. HERE is another informative LINK.
A little extra almond milk or heavy cream