Blue, since you have a child in the home being affected, I would suggest you get someone of the clergy to give a blessing in that home. Barring that, you may want to have an investigative team come in who HAS a clergy member who can do it as they check things out. Not sure where you live and what current Covid guidelines are in your area to even be able to do this at the moment.
There are several physical problems a home can have that can cause the affects you are experiencing, including high EMF, hidden mold spores, etc. If it was a drug house prior to your purchase, you also need to be sure none of that is a residual in the air. You need to rule those out.
Because the home has a history, energy can embed into the house and land itself. This requires a cleansing, and if you are not experienced in doing it, you might want to check and see if anyone in your area has experience in this. Social media can be helpful during this time of Covid to find someone, but BE SURE to check out references on the person.