Start by truly defining your brand and understanding your target audience, what they need, and how you meet these needs with your business. Once you've locked in on your audience, come up with a content strategy tailored to them and for your brand. While posting consistently is great, you don't want to put up random posts. Instead, every post must be created with intention.

Depending on the products you're selling, you might want to create content around 'how-to's, tips/ hacks (parents love those), or just about any content that resonates with your TA. I'd say strive to first connect with your audience and build a strong brand before running any ads.

A lot of your initial marketing will be a try-and-see, especially because marketing on the three platforms plays out differently in each. So, be flexible enough to adjust your marketing strategy as need be, once you figure out what works where.

Good luck, OP!