Train the same. You said you know you should increase reps and decrease weight. That's only a myth. Proven to be wrong and pointless. You might NEED to lighten the weight for the joints or because you don't have as much energy during some cutting diets but it doesn't mean you HAVE to or should even. Try and stick with the same weights to maintain muscle and let the diet and/or cardio help you with the fat loss. You might want to add some "burnout" sets at the end but other than that you're training(weight training-wise) should stay the same other than doing more cardio if you wish. Also, cardio on an empty stomach is best for fat loss but may cause you to lose muscle as well. It depends. If you take anti-catabolic supplements before the workout or are on steroids the impact obviously isn't going to be that bad or bad at all. Limiting the intensity to to more moderate will help your body burn fat more readily as well instead of eating away at your muscle tissue. As for clen, I tried it but didn't like it. Since it's half life is long though and it does burn out your beta receptors fairly fast a 2 week on 1 to 2 weeks off method should work nicely. Also, during this week or weeks off don't go on eca. Contrary to popular belief I believe this method is flawed since eca and clen hit similar receptors with clen being much stronger thus defeating the "giving the receptors a break" purpose. Yohimbine during this off phase might be more useful.