You mustn't help like this again..maybe you can help with some minor things , or manky things like CPR or ringing 999,but the professionals don't just lift people up, they have the equipment to do it safely. My dad started falling, the alarm people would come out with the proper equipment and get him up safely and do a simple triage to see if we needed to call the ambulance or the doc. I did get a bit cross with my brother, who being big and strong could get him up, but he never got checked over at all, and honestly the doc needs to have on record what's been happening, do they need a change in medication perhaps, extra help or the district nurse visiting ( or even put on the end of life support, whereby we could ring up the specialist team at any time of the day or night and ask questions, does he need the nurse to come, what do I do etc.
You're not qualified to judge whether neighbour needs medical help and you've not got the equipment and training to pick him up safely without injuring yourself.
So maybe minor fillings such as popping for a prescription or posting a letter but nothing heavy