ThermoStat / Diverter T zoning advice requetsted

Hi, I've a 1952 house with a single zone diverter T (one-pipe). The thermostat is on the first floor, I'd like to add a zone to the second floor or have a wireless thermostat to control at night for the second floor?
I believe my only option is to add a second zone? any other ideas?
Thanks Mike
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
You have to split the piping to the second floor from the first floor and get it connected to a separate thermostatically controlled circulator, or keep the existing circulator and use two thermostatically controlled zone valves

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.