First, you need to believe in yourself, and not deciding that you get confused or calling yourself a confused soul! There is nothing wrong in switching over, if there are good opportunities and you are passionate about it. And next is you need to prioritize it too. If you think your kid needs more time, then spend time him and the remaining time, you could focus on career. However, you may not able get a job like this, except home based marketing including digital marketing or part time flexible work. It is a nice thing that you are concerned about your husband's financial condition and support. You sit with him and work out on these things and child responsibility. It is your husband's duty as well, and I could not get a hint on this in your mail. At times, you need to compromise on salary, but not a quarter of your previous salary. If they knew your potential, they would have offered fair compensation.
Prof. VijendraKumar SK