I don't know in which way your thoughts are suppressed, this can make a difference. It's not about suppressing, but more silencing.
If it's just silencing and your mind doesn't want to think because it likes the silence, that's great. A good indicator of whether you are suppresing or whether it's going well is the feeling you get out of meditation. If it feels good, I wouldn't cut back on the practice as some others suggested, but you may need to learn one or two tricks. A trick is to prepare the mind of what it's going to do. When you are going to do meditation, tell the mind you are going to do meditation. When you are going to work, tell your mind it's time to think again. That way you'll learn the difference between when thoughts need to be activated and when they do not. It may take a bit of getting used to, but this is the way to also tell your mind when to contemplate, to pick up a certain subject, when time is right. It's setting up sati on a specific task.
I found it works wonders. When at work, my mind is in thinking mode on a subject I want it to think on. When practicing meditation, it's not. (in general) It's quite useful and peaceful to be able switch your thoughts on and off.
According to MN20 if I recall correctly, such a control of the thought process is a result of meditation. But yeah, it's beneficial to learn how to program the mind, which in itself isn't the easiest thing in the world, but if you didn't know about this yet, I suggest you try it out. To learn how to do this is also useful in meditation as well, and I would also practice it inside of meditation. For example, telling the mind to pick up metta in a talkative or silent way, or to pick up the body/breath/pitisukkha etc. To pick up the body parts silently or with active thinking etc. Play around a bit to see how this works.
Ajahn Brahm teaches this under the name of "setting up the gatekeeper". It's explained here:http://www.dhammatalks.net/Books/Ajahn_ ... ulness.htm