I feel like this question is “can I still practice my faith even if I don’t really buy it?” and I think the answer is “of course!” You don’t have to apologize to yourself or anybody else if you like to pray, or attend services, or observe feasts/holidays/saints’ days/etc. There is no requirement that you believe. Do you enjoy praying? Does it connect you to something — maybe something within, maybe something beyond, maybe to a community whether that’s in real space or a broader community out there in the world? Then pray! Do you have a nagging feeling that your prayers ascend into an empty sky? Me too! Who cares! I pray every night and at many points throughout the day. There’s probably no God. It doesn’t matter. It feels good to me to engage in acts of religious devotion, to talk to the G/gods I’ve carried in my heart. To give thanks. To confess to some Being, whether real or imagined but in private, my shortcomings, and to ask for strength. I connect to something essential in myself when I pray. Life’s long and the paths winds through all sorts of places. I think the only imperative is “be present to the places you’re passing through.” There are plenty of reasons to be observant and it’s your life — no-one can tell how you’re supposed to feel when you pray. That’s between you and the object of your prayers, or between you an an incomprehensible void, depending.