How might you begin to practice fixed hour prayer? You could try what a friend of mine did. He set an alarm on his phone and each day when the alarm sounded, he took a few minutes to stop what he was doing. In that moment you could remind yourself you are in God’s presence, you are God’s beloved, then offer what you were doing and are about to do to God. It does not take a big effort to stop what you are doing and “interrupt” the day with a call to worship.
How about it? Want to set an alarm on your phone or on your watch and see what happens?