Dealing with Soviet tech transitions

Hello there,
I've struggling as OKW on how to deal with soviets adaptability during the transition from early to mid game.

They always start
CE - 5 Cons or
2 CE - 3 Penals - Guards

Then T70.

There's a Clown car here and there, but let's put it aside.

When I see Cons, I field 5 Volks and go Luchs and maybe a Rak if I scout their tech building.
When I see Penals, I go 3 to 4 Volks, MG and Luchs. Sometimes I try to double Sturmpios. They work wonders.

Then, regardless, I play pretending I'm Mobile Defense Ostheer and field a Puma by the time the soviet deploys his T70.

Thing is: I don't field my Puma, I'm eaten alive.
If I field my Puma, I've seen 5 times in a row the soviet ignoring their Light, locking the T34/85 commander and rush for it. I get map control between this and the tank deployment.

Then the SpecOps CommandPanther takes too much fuel, I struggle to much MP to field more Raks or I need to tech T4 and then I'm behind (besides the terrible default TD and Panther). By the time I field a good-enough force to fight, there's already a second T34/85 on my doorstep. Sometimes a SU85 even.

What can I change? More raks earlier seen a bit waste of MP since I'm dealing with penals and upgraded guards, but then, who am I.

You could try not building the Puma until you see the T70. Also Puma and raketten should be enough to hold off even T-34-85 until you can field some medium armor or a Panther.