questions about what happens if I cancel only my internet and keep the streaming service

I currently have Xfinity TV & Xfinity Internet.  I provided the NetGear to project the internet within our home.  I am considering changing internet providers due to the high cost of the service with Xfinity.  I want to know the following:  1) how do I cancel the internet service? 2) Can I use the new internet service with my Xfinity Streaming service? and 3) Will I need a new box for the TV?   I've been paying $10/mo for the stupid TV box after being told there wouldn't be a charge.  My bill shows $106 internet monthly fee with a discount for 2 services.  Now our electric company is offering monthly fee of $60/mo for 2 years at faster speeds with new fiber optics installed.

If Xfinity wants to lower my cost for the internet, even though it is slower, I would keep it just to avoid the hassle.  Thank you.