I am seeking help from the community regarding my Sony XR-75X90J TV, which I recently set up to watch the Olympics using a Hastings Telecom IPTV service. The provided device is the one shown in the image.

My requirements are:

1. Use a single remote control (either the TV's or the IPTV box's, or find an alternative solution)
2. Control the TV's power on and off
3. Automatically switch the TV's HDMI input to the IPTV box's HDMI output, as the TV also connects to other devices such as Apple TV and XBox.

Is there a way to achieve this?