K. D., please let me start by saying, I noticed you referenced yourself as being "stupid" twice in your request. YOU ARE THE FARTHEST THING FROM IT!!!! You sound like a fantastic mom giving her all to her child, while dealing with a very tough situation, to say the least. You have made, what I believe, are positive choices thus far... your priorities seem to be in the right place with regards to the care of your son, i.e., moving in with your parents so that you could be there for your son as much as possible during those crucial first years of his life...working odd, irregular jobs in order to stay home with him, etc.
As a single mom myself, I have made similar choices for my now 4-year old daughter (I believe it has done wonders for her), including moving back in with family and working several part-time jobs during the first three years of her life...I just cut back wherever I could and did whatever I had to do to make sure I was able to be home with her as much as possible in the beginning.
As far as the child support piece, you were regularly receiving support and so had not pursued legal action. It is understandable not to want to involve court, if at all possible. No one relishes in the idea of going to court against her child's father. However, if he is not paying, he leaves you with no other option. You are doing all you can do in this regard, which can unfortunately be a lengthy process. Hang in there. When you start receiving those regular, automatically deposited payments, it will be worth it. I regularly receive support without court-involvement, but in the event her father started sporadically paying or cutting back on my payments, or not paying at all for some reason, I would be in the same desperate position as you, and having to immediately pursue child support through the State.
Pursuing daycare assistance through DHS is also a positive move on your part. However, you are right, they do not pay nearly enough toward child care to make it affordable for a single mom struggling to make ends meet. Also, I seem to remember that they took the combined income of her father and I, even though we were not in the same household, when assessing whether or not I was eligible for services. (Turned out I was not.) If he is not on the birth certificate and not paying support, I believe they want you to pursue that piece before reviewing your eligibility for benefits, which could prolong things further - although I am not positive on this... I hope I am mistaken here.
Nevertheless, in the meantime, think about the possibility of looking for a nanny position that will allow you to bring your son with you, at least part of the time. I did that for about a year and a half. It definitely helped. For those times you are not able to bring him along and if your parents are willing to watch him, take them up on it. Hopefully, it will be a short-term solution until you are able to begin receiving child support and some daycare assistance.
You are blessed to have your parents, and as long as you are doing everything you can do to improve the situation for you and your son, there is no shame in seeking out help from family (unless it in some way compromises the health of your parents). It is not your fault that your child's father has chosen not to take responsibility for his son. I have struggled with this plenty with my own daughter, and I don't know what I would have done were it not for my family and my mother, in particular. As long as you're not sitting on your butt and taking advantage of the good will of your parents or family members, I would not be so hard on yourself about asking for a little extra help at this particularly trying time, in light of your daughter's father abruptly choosing to throw you into financial turmoil by fully withdrawing the regular support he once provided for his child (sorry, long run-on sentence there).
Things will work out in the long-run, just try to stay positive, focused, and in the moment so that you do not get overwhelmed by looking too far in advance. When the present time stabilizes a bit for you two, then you can start looking down the road at some longer-term goals. In the meantime, you are exploring and pursuing all the right avenues... keep up the good work!! You are a wonderful, dedicated mother!! Your son is blessed to have you loving him and in his corner.
All the best,
L.