Over a year and still not fully ‘trained’

[unicornglittersprinkles]

Please help, I’m at my wits end and really starting to worry. Dd3 is 3.5 and we’ve been potty training since 2.4. Initially she was really enthusiastic and after a few days she was completely clean and dry for nearly 3 months. We then went on holiday and accidents started, only 2-3 whilst we were away so we put it down to change of routine but back at nursery she started having 3-5 accidents per day! After persevering for a couple of months with no improvement we put her back into nappies and restarted in January when she turned 3.
Again she took to it quickly and enthusiastically and stayed clean and dry for the first few months. However, since April accidents have started again and we’re now dealing with 1-2 (mostly) poo accidents per week. She does tell us when she needs to go and takes herself off to the toilet and most of these accidents happen at nursery when I’m sure she’s ‘too busy’.
After 13 months of trying I now feel as though she’s just not going to get it and, I know it’s a long time off, but I’m already worrying about her starting school next year (2024).
Any words of wisdom, tips or even stories from anyone who has experienced similar

Poo accidents are often caused by constipation. Even if she’s going regularly that can be overspill which she can’t properly control. This can feed into withholding, if they think it will be painful to go or there’s a block about going at nursery because the toilets are busy or something, which ultimately makes constipation worse. It’s so common in preschoolers that even if it’s ultimately not that I would still want to see the GP first to rule it out.

Thanks. I have actually got a gp appointment in the diary for her in 4 weeks time (soonest I could get) as I thought it’d be worth ruling out anything medical. Hadn’t heard of constipation causing accidents so good to know before I go and I’ll certainly mention it.