If need na ba mag change ng product, after more than a month of no sales.

Hi Coach, I have this client that has a new Shopify store, has multiple products with (pets, kitchen and baby products), those products po are part of top 100 winning products in Shopify. We've run ads for more than a month, we only focus on one product, may sinosolve naman pong problem, we do testing, awareness, traffic before jumping into conversions pero wala pa rin pong return na Sales. Should we be concerned na po, or we have to consider switching products, since nagtetest lang po kami ng nagtetest and then nagpull out ng sales campaign pag panget ang performance. Thanks po.