hello Easy,
just to add, we have had a similar experience with DD (now 5). I know it is a source of concern so I wouldn't worry about asking for help if you feel it is needed.
When you saw the physio for the diagnosis, did he/she not suggest keeping your daughter on for more treatment?
Initially, we asked for a referral at around 16mths which led to physio. DD then walked around 22 months. We then relaxed for a while but it became apparent she was a bit 'behind' at around 3 so we asked for more physio. We were told of course, that she would tend to be a bit later meeting her physical milestones.
I found the HV a good person to ask and last year I asked her for an OT referral too. DD's score was low so they will be doing some more therapy with her and I also asked HV about more physio!
Having said that, DD gets on fine at primary school, bit of a concern about muscle strength/handwriting going forward, but fine at this level. We do various exercises with her and she enjoys her dancing classes and I see a real improvement in her with this. She only recently started 1:1 swimming, so your daughter is still very young.
We do as much with her as we can practically and financially, but the professionals are there. I didn't want to be taking up a place etc with therapists but HV was fine with it. If you saw DD running about you would not see an issue really until you compare her with others ability. We are hoping she will continue to improve, even just to the point of being 'unsporty'!
Moral for us was; ask for the help! I'm not sure we would have got here without being proactive.