a tip i would offer would be not to look at the loss you are after in a weight term. Use it as a guide, but aim for a visual point where you will be happy. If your aiming to lose weight you might get to a point where, as LiE has said you will start losing lean muscle mass.
I have stayed the same weigth for the last 3 weeks but visually have got leaner after moving to a reduced calorie diet
For hiit i am folling the plan as follows:
Week 1-2 1:4 (high intensity:low intensity) 15sec:60sec 10x high set reps
week 3-4 1:2 (hi:li) 30sec:60sec 10x hi set reps
week 5-6 1:1 (hi:li) 30sec:30 sec 15x hi set reps
week 7-8 2:1 (hi:li) 30sec:15 sec 15x hi set reps
the key with Hiit is shorter more intense periods of high intensity, if you able to keep at the high intensity periods for more then 30 seconds your not pushing hard enough.
I do my hiit on a bike and really hammer the hi reps!
If your happy with your conditioning when it comes to CV work i would suggest jump in to that right at week 5-6 and do the 1:1 ratio HiiT and increase the intensity of your high intensity periods
Thanks, will try the week 5-6. Will try and run faster, not sure if the treadmill goes much higher than 18kmph lol