I removed the notion of watering schedule from my head and currently working on feel and watering in small amounts accordingly in order to avoid overdoing it.
Fertilizer is at 1/4 tsp per small bottle of water (500 ml).
I did buy a moisture meter but returned it the day after. I mean as a test I put it in a container full of water and it barely touched the moist part! Maybe it was designed for smarter people