Game this Sunday

So I’ll be in Houston for the game this Sunday. I’m taking my 12 year old and would love some help with what to do while there. I arrive Saturday morning around 9. I’d like to take him to museum of natural sciences, the Houston zoo, and the Johnson space center.

Would I have time to do two of those on Saturday and maybe one on Sunday before the game at 3:30? If not which ones would you recommend. Just trying to utilize all my time there and have a great time.