Just add water to the kind soil and place it in a 5 gallon pot with the lid on. Get it moist but not damp or soacked. Turn around the mix twice a week and keep it always moist but not damp. Keep doing that for a month then it's ready!!! GL
First of all that soil looks horrible and overwatered., U have to provide more info like everything u have been doing since the beginning., Without any info i know for sure your ph its out of wack. Second i bet ur watering/feeding schedule is terrible., Soil we already know it's terrible...