My 2 cents , I moved to my village since covid. Let me start with the bad news.
Knowledge on profitable farm business is wide spread In villages. nobody wants to sell thier farm lands. The price they quote will put T1 city builders to shame.
what ever crops that your grow, require a decent size land holding if you want a sizable additional income. Land cost is very high. if you are planning to buy and start your farm. You are eligible for retirement without working. That much money is required. You can buy smaller 1 or 2 acres of land, but it will be far off from where you live. irrigated lands are not cheaper. Far off lands will add not just to your transportation expense, But also stealing of produce is very real. Getting labor to far off land is very difficult in villages.
next is weather - Not all cash crops grow in all weather. This would limit the choice of crops that one can grow. Most crops need volumes, if you want a decent additional income considering the effort one has to put in nurturing them. Labor is big problem. It will eat into profits. For first gen farmers, it will take at least 5 years to understand the intricacies of farming. It is a full time business. When done as hobby, wont be profitable.
Farming is a way of life. One needs to spend time and grow into it. It is not impossible to start later in life. But will take a considerable amount of time to understand and start making profit, big enough to resign from IT. People who are used to salary income wont be able to adjust to the change. Unless one is very rich and decided to retire, becoming a first gen farmer is impossible.