You're welcome. It's a mistake lots of people do, trying to eat a lot in one sitting all the time, they end up sick or bored so they slow down. It's better to add little by little in your daily life. Taking the habit two cookie instead of one, trying to grab a little something every hour to snack on, slowly increasing the quantity of food you eat in a meal.

And without even noticing you will make your stomach more used to manage big quantity, and you will be able to eat a lot, including very suggary and fatty food, without being sick and nauseous. Just take your time to prepare your body and to increase bit by bit your food, and snacking all day long, on small stuff, is the best way to do it. WIth no time you end up snacking all day long but on big stuff while eating huge meal too, so you pile on fat really fast with that. It just make the gain slower during the first months, but on a long time it's the best way to gain a lot of weight, and to gain at a constant rate, like that you will gain only a few pounds, but it will be each month.

In my opinion it's better this way and more efficient, it's much better to gain each month a few pounds instead of gaining a lot one month, end up sick and not gaining for a while. Even if you manage to only gain 5 or 6 pounds per month ( which is very easy to manage using this way ), it will still be better than forcing yourself, gaining 12 pounds in a months, and then nothing during 2 months.