I agree with what RnR said about relaxingg and having fun. You've got a month left so you want to focus on places where you can make up time without a lot of training. Transitions are free time if you get good at them.
I like to do a little workout before sprint tris where I set up T1 and T2, pretend I came out of the pool, go through my T1, get on the bike and ride for 10 min, T2 and run for 5. Then I rest for 5 min or so and do it again, and again.
The goal is to bring your transition times down so make sure to time yourself for motivation and feedback. This also works as a good workout to get you used to running off the bike.
As for workouts, your distances are all there. So I would just throw in the workout above during the week and maybe a longer brick on the weekend, you might ride the distance of the race then run for 15 min after.
Remember that you will not make any gains in the last week before the race and a structured taper is the best way to optimize your race time. take the last 3 workouts for each of the 3 disciplines before the race, make the 3rd one out 75% of the length of the race, then 50%, then 25%. Throw in some short (30 sec) bursts of speed if you can but you should feel light and easy.
Hope that helps.
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