Great advice given already! I also agree with seeing of any of your friends are visiting these schools, and see if you can tag along. My S did that for a few that I just couldn’t seem to manage to get him to.
On the ones that your mom will go see with you, really try to involve her in the day. Ask her for her opinions, try to encourage her to see stuff that has caught your eye- “hey mom, come check this out”. Perhaps if she sees this as a fun, bonding experience that you WANT her to be a part of, she may decide to go see more.
Good luck!