What can I do about hollowing temples, thinning cheeks, and sagging jawline while breastfeeding?

I'm a 37 year old woman who is 4 months postpartum and exclusively breastfeeding. I plan on breastfeeding for at least a year. My face is looking much worse since giving birth and I'm frustrated with it. So far, I've done one microneedling with radiofrequency session with a Licensed Aesthetician. I think this microneedling has its limits of how much it can improve my problems. Is there anything else I can do? What are my options when I'm done breastfeeding?