When and how much NXT coins should I expect to forge?
Will I at least make a coin a day?
You need a minimum balance of 1000 NXT to start forging. When the NXT arrive in your account they must mature 1440 blocks before you can forge with it. To calculate your forging income, you can use this tool:
https://www.mynxt.info/forging_calculator.php
With only 2200 NXT you can't expect much forging power, but you could get additional income because every forging account is taken part of the megalodon forging lottery as described here:
https://nxtforum.org/general-discussion/5-million-nxt-bounty-for-nxt-ardor-forgers/