Sounds like you have some good ideas to try there.
Also, people in modern times tend to be sleep deprived. Before electricity was invented they say most people slept more like 9 hours per night, especially in winter. Getting a full night's sleep should help.
I would also try a little more complicated mantra to keep the mind engaged. Then maybe set a timer for 15 minutes and add 5 minutes per week -- this might add urgency to the concentration effort early on until you get a rhythm going.
Also, people in modern times tend to be sleep deprived. Before electricity was invented they say most people slept more like 9 hours per night, especially in winter. Getting a full night's sleep should help.
I would also try a little more complicated mantra to keep the mind engaged. Then maybe set a timer for 15 minutes and add 5 minutes per week -- this might add urgency to the concentration effort early on until you get a rhythm going.