Yes you can swap over to TR. It means you will need to get at least one test in every cycle but better if you can test more often .
You will be able to increase the dose every 6 cycles if warranted. I would suggest you start posting every day to get advice and suggestions for at least a while.
You are also better at this stage going up and down in 1/4 unit increments not fattening the dose. That is for when you are really close to the best dose and just need to add a tiny bit more or less.
You will decrease the dose if he drops under 50