I feel this is a right time for you to quit. So get some new offers in hand
bargain hard for it. Multiple offers help you to bargain.
Also look for work life balance etc intangible things in your new employment.
Someone here advises to stays for at least 5 years per company. Although this advice
is ideal but not practical. In fact competent people find new opportunities easily
as against the people who stay in a particular company doing routine work.
their skillsets also rust
. Any company starts to stink after 2,3 years unless it pays you really
well or you get a lot of new things to learn/manage.
Your company seems to be growing and you definately need your share of pie.
The company management may only appreciate/reward you when you show them the offer letters.
Dont talk about 3 months notice. The future employer will run away from you..
1 month is fair enough.
Wish you good luck