As noted, clonazolam at 3mg, let alone 5mg, is actually a high dose, as clonazolam is very strong. A non-tolerant individual will be high from 0.25mg. Your best bet is to find the minimum dose that will keep you well, and stay on that dose, VERY strictly, for 2 weeks. If you slip up and take more, it will set you back even if it's just once. If you need to go a little higher and feel it a little to avoid slipping up, that would be the best thing. Clonazolam lasts a long time so if you can manage to dose just once a day, that would make it easier. If you can do once a day, take it later in the day so you can sleep.
Once you find a good maintenance dose, stick with it for a couple of weeks, and then drop by 10% (this is the number I see used most often). Drop 10% every 2 weeks. It will be a long taper because 10% becomes smaller and smaller the lower you go. You can't just drop by 10% of the original amount every week because the percentage of the new dose becomes smaller as the dose gets smaller. Eventually dropping by the same amount will result in 50% reductions, which is going to be hellish. So it would be like this (let's say 2mg is your starting maintenance dose):
Day 1: 2mg
Day 14: 1.8mg
Day 21: 1.62mg
Day 28: 1.458mg
etc
It will take a while but this is the way you can avoid experiencing withdrawals and eventually get off. Benzo/gabaergic withdrawals are very dangerous and it causes excitotoxicity, which essentially causes brain damage. A long, slow taper will result is less lingering side effects. Oftentimes people who go cold turkey or drop too fast will experience a long period of recovery even after getting past the acute withdrawals. Slow and steady wins the race when it comes to benzos.