Okay, thanks for that info. It sounds like you are taking a lot less lorazepam than you were taking clonazepam, so it makes sense that you would be having withdrawal symptoms.
You may have seen "
equivalency tables" for benzodiazepenes where they tell you approximately how many mg of one benzo is equivalent to 1 mg of another. Clonazepam is about 4 times stronger (per mg) than lorazepam according to the table I linked to above, so yes, I'll bet you're going through some withdrawal.
I'm glad you're getting a 4x/day dosing schedule on the lorazepam. (if you're taking it every day, I mean.) When I took it, I was on 3x/day dosing and I started getting withdrawal symptoms between doses after a few months.
I hope your clonazepam withdrawal doesn't go on for too long.