The7 Theme Website Loads SO Slooow!

I’m using The7 Theme and I’ve used it on http://www.fortcollins.design successfully, without poor load times, but this 400+ page site called http://www.happylittlesurprises.com is loading so slow.

Please help me, everyone’s leaving after they come to the website because it’s soo slow!

Thank you so much!

Ruthie