we saw the most advances in development around three. (i posted higher up as well about her walking etc, but you probably missed it
) she crawled from about 15 mos, used a standing frame from 12 mos, used a walker, and eventually stopped using a walking frame after yr r. (she wasn't using it indoors at that stage, just to run around in the playground with her friends). we do still have a wheelchair for long days out or speed/ distance, but to be honest rarely use it. she was using it regularly until about 5 or 6.
dd2 did have neonatal seizures, (she was loaded with pheno etc) but because she was sz free after a few months it wasn't necessary to have single vaccs. she had the usual ones on time.
re adaptations - tbh the only ones we've needed are a rail on both sides of stairs, and rails for the toilet (we originally had a full adaptation with chest harness etc, but she didn't need it for very long). and tbh now at 7, she can just about manage with a rail on one side of the stairs if we are out and about - at home she has been known to use momentum to get up the first two or three steps without holding on at all.
most of this was due to trunk/ full body involvement though.
re surgery etc. dd2 had very tight hamstrings etc. if she's pulling to stand and trying to cruise, i'm going to go out on a limb and say it's possible that they might try botox, but will probably try to manage the tightness with physio. once she is walking (and she will be, very soon, even if with a walker at first) the walking action will help to stretch the muscles. we did tons of ankle physio with dd2, but once she was on her feet (in the standing frame and then walker) a lot of it is done for you! dd2 also had gaiters, and has worn piedro boots for a long time. our orthotist was very sensible and always suggested a mixture of shoes so that the ankles strengthened and did not require bracing full time. and i think the ballet helped
when she started ballet at 4, she couldn't stand still unaided (she had to hold on or would over balance) and certainly couldn't stand on one leg lol, but we found a brilliant teacher. her physio was over the moon.
as sneezecake said, baclofen is worth a shot too.
badkitty - a dx isn't necessary to access physio etc, were they going to discharge you without a dx? it's quite usual to do 'wait and see' before a cp dx, which is why lots of kids run with 'developmental delay' for so long. kids who are developmentally delayed should be getting physio, ot , slt or whatever as required, even dla if applicable...