Any ideas or tips as to how to try and get there? Other than pull on pull buoy and pull. Any swimming and swimming sets advice other than swim more? Long sets/short?etc etc
Hey I can't help you with TBB special swim sets, but I'll share some of my theories that I'm sure can help

Its important to have a "tests set" that is challenging and repeated regularly.
With time it will become to you a clear indicator of where your fitness is at!
If you happend to feel like crap in the water during warmup,
especialy in the mornings or in big training blocks,
longer warm ups can make a significant difference in you swim session that day!
Doing a high heart rate swim the same day of a high heart rate run
might take away from each other...
Doing a short short swim,
is better than to not swim at all.
Practice diving sprints! <---No paddles

It can be very helpfull come race day!
Dont do all your swimming with your new paddles because you wont be using them race day!
Dont do too long of warm downs...theres none on race day.