Exactly!!Throwing everything you can think of at a problem out of desperation is tempting. Been there, done it. But I advise you try one thing at a time. That way you will know if something is working or not.
The 4/10 is bare minimum IMO...there's nothing 'exactly' about chickeneering, observation and adjustment is more successful.space is exactly 4/10 and change
Additional Space and Animal Protein is where I'd start in this situation.