I want to know how you use the forum. Can you engage in forum discussion when you are in the midst of people that your attention can be called at anytime. Or you use the forum when you are free alone, like in the midnight when every where is quiet.
Why are you here? What is your purpose of being on the forum? What do you wish to achieve? You are not under any obligation to make post on the forum at a particular time or in a particular manner. The frequency with which you contribute to the forum depends on your goals and availability. You can make some time for it. You can decide to make posts twice a day or once, depending on how your have prioritized it. In chiping in my contribution, I have also responded to your question.