Although I was born into a R/C family and was baptized in the R/C Church, the path I follow is that of a Pagan/Wiccan woman (age 57). I wish to address the original poster, but not about Halloween (I have made a post about that in someone else’s thread) but about being led to a choice of faith/religion.
I took time to review your other posts and threads. Because of the details I read there, my advice is – because of the “all or nothing” inclinations of your human heart – go with Catholicism 100% and don’t look back. Don’t second-guess yourself. Commit yourself! Don’t wonder “what if.” Open yourself totally and be all you can be within the Family of the Church. Live it, love it, embrace it, and embrace yourself as well. Love yourself… because of some things and in spite of others… but love yourself nonetheless, deeply and purely. Nurture yourself with every positive feeling in which your faith bathes you, and put no limits on it because there are none to those who believe with all their hearts in the truth of their salvation and the love of their Creator. Respect yourself because you are a Child of the Creator. You were made by love and with love for the purpose of spreading that love. With that in mind, take every opportunity to educate your son (in an age-appropriate manner) with regard to the faith you have chosen for him. Make it fun, make it holy, make it the best part of his life.
I respect and appreciate the suggestions of those others who wrote here with regard to adding to the more formal practices of the R/C faith (such as Mass, the sacraments, etc.) the wholesome and innocent details of nature appreciation, the change of seasons, baking bread, honoring the Blessed Mother, study of the saints, etc. Such things are sacred by their very nature (having been made by the Creator out of love), and they can be worked into the practices of the R/C faith very well without disruption, disrespect or blasphemy. (The Mary Garden - WOW! Simply beautiful!)
May you find peace. Blessings!