Sounds sensible.
From the perspective of a 40 year old who's climbed for 13 years and has remained a punter (e2/7a rp/6c os), but is now beginning to realise what he should have done(!):
The main thing with fingerboarding as I understnad it is to take it slow. i think the issue is that strength gains in the muscles can get ahead of tendon strength etc, so if you keep ramping it up the inevitable result is "bang" ... and torn soft tissues take months to heal. Having said that, sensibly used I think fingerboarding is a great tool for long term improvement, and I wish I'd worked out how to use it 10 years ago. There are a few things that aren't obvious despite the amount thats written about fingerboarding:
1. It's a tough workout. Reading it and doing it aren't the same - don't underestimate how tough a workout it is. You should be fresh coming into it, ie after a day off; and don't expect to do loads afterwards. I'd suggest 6 sets of repeaters (eg the first set of the 3 sets in the Beastmaker 5A workout; btw their app is worth the 2.99 or whatever) is a good place to start. After 3 or 4 workouts try stepping up to 12 sets. The gains are commensurate though: if you try hard you will see gains after 3 or 4 sessions, hangs that felt hard will feel ok and you'll be able to increase the weight (slightly).
2. Doing this in a gym is far from ideal - a home fingerboard setup is essential. The distractions are too great and the external pressures may make you too do much. Also the finger boards are often trashed, and others people can get in the way of doing your sets with the correct rest intervals.
3. A pulley system to add/remove weight is essential. It's like the cost of one or two physio sessions to setup a pulley system with weights. That way you can add 2.5kg to a hang every two or four sessions once it starts to feel easy (or rather, less desperate!).
4. If you feel pain in any fingers, don't do a fingerboard session. Give it a few more days until there is no pain. Or a week. If you still have pain then you overdid it and should back off.
5. Warmup more than you think you should. Not less than 20 minutes. Fingerboarding is NOT a 15 minute workout, realistically an hour is needed.
One other idea, while your lower body is injured, is to work on shoulder stability. I've had some neck issues and this is often connected to shoulder stability problems and resulting overuse of neck muscles. There's a decent shoulder stability workout linked from somewhere on UKC. Shoulder problems are VERY common in long term climbers; so some "pre hab" is time well spent in preparing for the next bout of hard training once you've recovered.
Would recommend avoiding the (foot off) campus board for now. It's more fun than fingerboarding, but much more likely to injure you. Foot on is a different story.
Post edited at 13:18