They look ok and are registered. What works for one may not work for others. Yes, start on 1 drop either 2 or 3 times a day. Do that for a week and see how you go. Increase to 2 drops on each occasion after that and then to 3 etc. Some people can take up to 6 weeks to get any benefit or, if lucky like me you will get results MUCH earlier than that. More is not necessarily better here. You need to find what works for YOU. One thing to consider though is using an oil with a high level of cbdA which is specifically meant to be good for joint pain and reduce inflammation etc. I cannot see what yours has. may be worth asking them? I started with H&B before I knew better. Then got some Cheds Green which is high in cbda. I have since blended them together but when this runs out I think I will use Simply CBD.co.uk . Their green is high also in cbda. Hope this helps.
I like Simply as they are very clear as to what is in the bottle and what levels you get per drop. Also, check the prices (need to add del costs but still good ). Excellent and all profits go towards their own animal sanctuary.
https://www.simply-cbd.co.uk/product/simplycbd-green-10ml-30ml/
Edit - just had another look at healthspan and they are very clear on website too. The level of cbd per drop is fairly low but that is not a bad thing when starting. Clear instructions too.