I would like to ask you for some advice. Recently a got a little Lithops. I put them out, in a sunny spot, but the roof was down, so they were getting undirect, filtered sunlight. After few days, I put the roof up and went shopping (forgot to put it down). When I came back about 3 pm, the plant looked rather bad. Well, first of all, there was water all over it, as it was trying to water itself, secondly, there were sun burned marks. I thought, that it got badly sunburned, so my first idea was so pour water over it. And so I did it... now, 2 days later, the plant is all shrinked, as if it got overwatered plus it is just soft, very soft. I do not think there will be a way to save it, I honestly think I stressed it out and killed it.
Really sad and feeling guilty about it! But anyway... I decided to try again, run back to Garden Centre and got 2 more, they are small, so put them in the same pot. Started also reading a lot about Lithops, I really like them, they migh be one of my favourties. Decided to keep this one inside, near the window (I am afraid of sunburn again!) and now some questions to you guys. Will they be happy indoors? Is there anything I especially need to know about this plant? I read, that I should only water them in some periods and very rarely? Please advise! 
Photo of the new plant attached.
