Hi Homeira! Hope all is well with you!

I was researching Lamictal here in a blog by an MD
Bipolar Medication Spotlight: Lamictal (Lamotrigine) | Bipolar Beat

It may be up to your doctor to say how long before moving up.

At Psych Central - Trusted mental health, depression, bipolar, ADHD & psychology information.
they also talk about side affects, search for Lamictal side affects