My Dog Recently Just Started Going Nuts When I Leave The House?
If your schedules changed, or you have started being more random, he may not have a good idea when you are coming back which is scary for dogs.
It could be that simple, if so, he may need a dog walker for consistency and or a special routine you do each time you leave so h knows how long- Like offering him a kong and turning on music when you will be gone longer.
Also, make sure you aren’t making a big deal saying goodbyes and hellos - it trains the dogs that your absence is a huge deal and all about them.
Greet dogs once they relax.