What you mean by "trigger SSRI" ?
I don't think there is any specific guidance that can be given here. Most people who take supplements do so experimentally: they take the supplement (often trying it a different dose levels), and then observe how they feel. With supplements, you are generally guided by your own self observations. I would suggest that you keep a written record of your experiments, and write down each day the supplements you take, the doses you take, and also how you feel, and how your symptoms change with these supplements. Take a scientific approach, based on experiment, self-observation and on writing down your observations.
Another important thing to note is that supplements are often not as powerful as drugs, and if you have serious anxiety disorder symptoms, you may need to take a lot of different anti-anxiety supplements together in order to experience benefit. This can be expensive. At one point I was taking more than 10 different anti-anxiety supplements together.
Also, do you have any particular problems with taking SSRI drugs? Are the SSRIs not helping you? Are you getting side effects from the SSRIs?
I am just wondering why in particular you want to taper off medications.
Note that tapering off clonazepam, which is a benzodiazepine drug, can sometimes be difficult, and some people experience horrible withdrawal symptoms from stopping benzodiazepines. You can read a very interesting survey about benzodiazepine withdrawal
here. About 50% of people have little or no symptoms on stopping benzodiazepines, but the other 50% can have moderate, severe or very severe symptoms on stopping.
So you need to be careful if you stop taking your clonazepam.