Is this unhealthy?

I know generally artificial sweeteners are considered bad. But ever since I’ve been eating healthy and losing weight I’ve gone to Starbucks everyday and gotten the same order. Is this ok? I know I should make my own coffee but I don’t have time or energy so I love my morning Starbucks. I order a grande iced coffee with coconut milk and 4 pumps of sugar free vanilla. Is this okay? Will it stall weight loss?