Does Revivifying Mutagen and Perpetual Infusions break the HP economy?

Revivifying Mutagen is a level 2 alchemist feat that allows you to metabolize the power of a mutagen you’re under and regain HP based on the level of the mutagen in question. It takes an action. Perpetual infusions (if you are either a lvl 7+ mutagenicist or a lvl 8+ alchemist who has taken Perpetual Breadth for a mutagen) allows you to create (relatively low-level, quickly-expiring) mutagens for free, all day long, at a cost of an action per. Drinking the thing also isn’t high-cost. It seems, then, that with that combination, you could rapidly heal yourself back to full from whatever level of damage at no resource cost. What I’ve seen elsewhere in the game suggests that healing is generally a daily or at best hourly resource. Is there something I’m missing here that makes this combination less cheesy than it appears?

Of particular interest because Revivifying Mutagen is only a level 2 feat, and is thus available to basically anyone via the Alchemist archetype for 2 feats (Alchemist Dedication and Basic Concoction). Two feats isn’t nothing, certainly, but if the result is that the party alchemist can rapidly heal everyone up to max after every fight for effectively no cost….