First grow ever: micro Hindu Kush Auto

Started my first grow ever of cannabis. I chose an autoflower for obvious easy cultivation reason. I plan to use LST when she is big enough and I hope to maintain a low structure due to a lack of height. I've also planned to use some pretty simple organic liquid nutes and no complicated mix, so I do not hope to get a big record on this grow, but since it's my first one ever, I'm pretty excited about any result I can get. I started the germination directly in humid soil, without any "glass of water" or "paper towel" technique. The seed promptly germinated (it came out of the ground after more or less 72 hours). I put it in a small grow tent (40x40 cm) under a 30w blurple grow bulb to begin with (I had it for other plants and decided to use it at first to avoid using useless quantities of electricity). I upgraded the light at the end of week 1 to a 60w white full-spectrum quantum board. The conditions were globally pretty harsh for the first week. We got a heat wave where I live and it got really challenging to maintain a decent temp and RH. Some days were really hot in the tent and the strong ventilation I put in order to refresh it got the air pretty dry, with somme RH under 35% some days. But I watched carefully enough to maintain the plant in good health (especially using half a plastic bottle over the seedling for the first days in order to maintain humidity). Even under theses conditions, at the end of week 1, she is already pretty big, with already two big leaves and a top developing well and rapidly, so I guess this variety can really grow up fast under perfect conditions.