I hear you, HealDad761. I've lost hair too. I've been taking a prenatal vitamin and collagen, hoping it'll help. Someone else posted that keeping their protein high helped them keep their hair.
The Mayo data on patch HRT plus GLP-1 synergy is worth bringing up at the next appointment - the oral absorption issue specifically with GLP-1s affecting estrogen levels is what makes the transdermal route so important for that combination.
Microneedling is one of the more practical options for loose skin between goal weight and potential surgical revision - results build gradually over 6-12 months of sessions but the collagen remodeling is real. Most providers recommend waiting until weight has been stable for at least 6 months before starting.