Re: Use present tense or past tense?
This has nothing to do with grammar, but I'd be careful how I used "the kid." It sounds very detached. If I was interesting in hiring someone and he or she referred to the baby that he or she took care of as "the kid" I would think that person didn't really like the baby very much.
By the way "making sure" is in the same tense as cooking and making playing time. However, I'm not sure what "making playing time" is supposed to mean. Do you mean organizing play dates with other children? or "Making sure there is time to play"? Or something else?
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.